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Canadian wildfires causing air quality issues across the U.S

As Canada is experiencing one of its worst wildfire seasons, parts of the U.S continue to be impacted. Detroit air quality ranked one of the worst in the world as of Wednesday. LiveNOW from FOX host Zach Horner spoke to FOX 2 Detroit’s Robin Murdoch on the air quality and how citizens can protect themselves. More LiveNOW from FOX streaming video.

Air quality has become a hot topic in recent years. After parts of the  U.S. dealt with some of the worst air quality in recorded history in June, you might be wondering how it’s actually measured.

Here are seven facts you should know about measuring air quality. 1. Air quality is measured with the air quality index

The air quality index, better known as AQI, as we know it today was released in 1999, according to AirNow.gov. It has gone through several updates over the years, but the goal has always been the same – to offer people an easy-to-understand daily report about the air they’re breathing.

The AQI ranges from 0 to 500 and has six color-coded categories to correspond to a different level of health concern, according to AirNow.gov. Basically, lower numbers equate to better air quality and higher numbers equate to poorer air quality.

THE AIR QUALITY INDEX EXPLAINED: WHAT AIR QUALITY IS BAD?

The air quality index ranges from 0 to 500 and has six color-coded categories to correspond to a different level of health concern. (FOX Weather) 2. There are six common air pollutants

Air quality managers monitor six common air pollutants: particle pollution, ozone, carbon monoxide, sulfur dioxide, nitrogen dioxide and lead, with the first two comprising the bulk of pollutants.

The reporting period is different for each air pollutant in the AQI, according to AirNow.gov. For example, the AQI for ozone is valid for eight hours, while the AQI for particle pollution is valid for 24 hours.

HOW TO WATCH FOX WEATHER 3. Lead is not included in daily air quality reports

Although lead is monitored by the Environmental Protection Agency, it’s not included in the daily AQI reports. According to an EPA spokesperson, that’s because the effects of lead pollution are cumulative.

"The AQI focuses on health effects that may be experienced within a few hours or days," the spokesperson said in a written statement. "Health effects from airborne lead more usually accumulate over longer time periods, so daily reports about air quality and potential health effects from lead exposure are not possible."

THESE 6 AIR POLLUTANTS CAN CAUSE PROBLEMS FOR YOUR HEALTH 4. When air quality is poor, an air quality action day might go into effect

An air quality action day, sometimes called an air quality alert day, is put into effect when the AQI reaches unhealthy ranges.

A view of the smoky air in downtown Chicago seen from Highway 90 as the air quality is at unhealthy levels due to smoke from Canadian wildfires in Chicago, United States on June 27, 2023. (Photo by Jacek Boczarski/Anadolu Agency via Getty Images)

There are numerous air pollution control agencies across America, each having slightly different terminology for such days and using varying AQI levels when considering them.

WHAT IS AN AIR QUALITY ACTION DAY?

According to AirNow.gov, air quality action days are most commonly put into effect when the AQI is expected to be unhealthy, or Code Red (AQI value of 151 to 200). In this case, everyone should reduce exposure to air pollution, especially the members of the sensitive groups for that day’s particular pollutant.

AirNow.gov provides several suggestions at this link on what you can do to help keep the air cleaner every day. 5. Instruments on the ground and in space collect air quality data

Measurements of air pollutant concentrations are taken at more than 4,000 monitoring stations owned and operated mainly by state environmental agencies, according to the EPA. These agencies send their hourly or daily pollutant concentration measurements to the EPA's Air Quality System database.

In addition, satellites orbiting the Earth collect information about air quality. For example, according to NOAA, satellites in NOAA’s GOES-R Series monitor the particle pollution in the atmosphere.

The Joint Polar Satellite System (JPSS) also collects information about particles in our air. These include smoke particles from wildfires, airborne dust during dust and sand storms, urban and industrial pollution and ash from erupting volcanoes, NOAA said. The JPSS series of satellites can also measure ground-level ozone.

WHAT TO DO WHEN WILDFIRE SMOKE SMOTHERS YOUR AREA AND HOW TO KEEP YOUR HOME'S AIR CLEAN 6. Air quality is affected by the seasons

When temperatures soar in the summer, the air quality in large cities usually takes a turn for the worse – especially ozone levels.

Ozone is good in the higher levels of the atmosphere, where the chemical protects us from harmful ultraviolet rays from the sun.

But near the Earth’s surface, ozone is the main component of smog and can trigger a number of health issues, including chest pain, coughing, throat irritation and congestion, according to the Puget Sound Clean Air Agency. Smog can even worsen bronchitis, emphysema and asthma and reduce lung function.

Ozone is at its worst on those hot summer days, when the hot sun "cooks" everyday emissions from motor vehicles, industry, paints, solvents and gasoline fumes, according to the PSCAA.

In the summer and especially during extreme heat waves, ozone often reaches dangerous levels in cities or nearby rural areas, according to the University Corporation for Atmospheric Research in Boulder, Colorado. Chicago air quality: worst in the world due to smoke from Canadian wildfires | LiveNOW from FOX

Chicago has the worst air quality of any city in the world today, according to the World Air Quality Index. Smoke from Canadian wildfires was pushed into the area, dropping air quality to unhealthy levels. More LiveNOW from FOX streaming video

But in some colder climates, winter doesn't escape polluted air either – though, in this case, it's not ozone but tiny particulates that degrade the air quality, such as from wood smoke out of a fireplace. Idling cars to defrost or keep them warm also increases the amount of air pollution, UCAR noted.

"We can get very strong inversions in mountainous regions, for instance, and an inversion is very good at trapping pollutants down to the surface," said Joost de Gouw, a chemistry professor at the University of Colorado Boulder and a fellow at the Cooperative Institute for Research in Environmental Sciences. "So in a lot of areas – for instance, in Salt Lake City – the air quality is the worst in the winter because the airspace is trapped."

An inversion is when temperatures rise with height, with warm air sitting overtop of colder air below. Since cold air is denser than warm air, it is trapped near the Earth’s surface.

Some areas will issue air quality burn bans when fireplace smoke could become an issue during strong wintertime inversions.

US Air Quality Map 7. Sources of air pollution have changed over the years

Most people think air pollution comes from car exhaust or industrial production, and this is a correct assumption. Wood smoke from either wildfires or home fireplaces can also contribute to degraded air quality due to an increase in tiny particles in the air.

But the sources of air pollution have changed over the years, scientists say, because of some tighter regulations.

WHERE DO OUR TOP AIR POLLUTANTS COME FROM?

"I would say 20 years ago, the top three (air quality polluters) were transportation/motor vehicles, power generation and industry," de Gouw said.

But the Clean Air Act, passed in 1970 and amended in 1977 and 1990, has reduced pollution from those sources.

"And so now, other sources that haven't been addressed so much are coming to the top of the list," said de Gouw.

Many of those are chemical products we use every day.

"For instance, all the shampoos and deodorants that we use in our daily lives; all the bottles we have in our homes that come from the automotive shop, the grocery store and the garden store, basically," he said.

Even agriculture can contribute to air quality issues.

"There's a lot of ammonia that comes from animal feedlots," said de Gouw. "We smell those here on a regular basis in Colorado. And so, yeah, so the number of sources has really diversified because we've been so successful in skimming off the top ones, you might say."

Get updates to this story on FOXWeather.com.

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Entertainment

Cassie tells court ‘freak offs’ became like a job as she alleges years of abuse by Sean ‘Diddy’ Combs

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Cassie tells court 'freak offs' became like a job as she alleges years of abuse by Sean 'Diddy' Combs

Sean “Diddy” Combs’s former girlfriend Cassie has told his sex-trafficking trial that “freak offs” with male escorts became like a job, as the music mogul allegedly abused and sexually exploited her for years.

The musician and model, whose full name is Casandra Ventura, did not look at Combs as she took to the witness stand in court in Manhattan, New York.

Over about six hours, the 38-year-old, who is eight months pregnant with her third child with husband Alex Fine, at times became emotional as she alleged she was degraded by her former partner during their 10-year on-off relationship.

Sean ‘Diddy’ Combs trial: Day 2 – As it happened

Sean 'Diddy' Combs makes a hand gesture to family members at his New York trial. Pic: Reuters
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Combs made a heart gesture to family members in court. Pic: Reuters/Jane Rosenberg

Sean "Diddy" Combs watches as former girlfriend Casandra "Cassie" Ventura reacts during testimony to prosecutor Emily Johnson at Combs' sex trafficking trial in New York City, New York, U.S., May 13, 2025 in this courtroom sketch. REUTERS/Jane
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Ms Ventura became emotional at times. Pic: Reuters/Jane Rosenberg


Combs, 55, has pleaded not guilty and strenuously denied allegations of sexual abuse. His lawyers argue that although he could be violent, he never veered into sex trafficking and racketeering, and that all sexual encounters were consensual.

Ms Ventura, who is the central witness in the prosecutors’ case, began by telling the jury how Combs was violent to her over the course of their relationship, giving her black eyes and bruises.

The hip-hop star became increasingly controlling, she said, and was allegedly abusive over the smallest perceived slights. “You make the wrong face, and the next thing I knew I was getting hit in the face,” she said.

Ms Ventura was 19 when she signed to his label, Bad Boy, she said, and 22 when, during the first year of their relationship, Combs first proposed a “freak off” – a sexual encounter with a third party. Her “stomach churned”, she said, and she was “confused, nervous, but also loved him very much” and wanted to please him. She described him as “charming” but “polarising”.

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Combs’s family arrive for Day 2

‘There was no space to do anything else’

Throughout her time on the stand, she gave graphic details of these drug and drink-fuelled encounters with male escorts, saying Combs would watch and masturbate, and often record the encounters and watch the videos back.

They could last for hours or even days, she said – telling the court the longest went on for four days. They ended up becoming weekly events and took priority over her music career, jurors heard. While she had hits with singles Me & U and Long Way 2 Go in 2006, and signed a 10-album deal with Bad Boy, jurors heard she only released one album.

“Freak-offs became a job where there was no space to do anything else but to recover and just try to feel normal again,” Ms Ventura said. Each time, she added, she had to recuperate from lack of sleep, alcohol, drugs “and other substances”, and “having sex with a stranger for days”.

Read more:
The rise and fall of Sean Combs

Diddy – a timeline of allegations
Everything you need to know about the trial

Sean 'Diddy' Combs and Cassie Ventura at the 2017 Costume Institute Benefit Gala ub 2017. Pic: zz/XPX/STAR MAX/IPx 2017/AP
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Combs and Cassie pictured in 2017. Pic: zz/XPX/STAR MAX/IPx 2017/AP

Alleged violence detailed in court

Ms Ventura told the court she began feeling as if she could not say no to Combs’s demands because “there were blackmail materials to make me feel like if I didn’t do it, it would be held over my head in that way or these things would become public”.

She was also worried about potential violence, she told the court. When asked in court how frequently Combs became violent with her, Ms Ventura responded: “Too frequently.”

The rapper “would mash me in the head, knock me over, drag me, kick me”, she said. “Stomp me in the head if I was down”.

Ms Ventura also told the court that Combs kept cash, jewellery, guns and “sometimes tapes from cameras” in safes at several properties in New York, Los Angeles, Miami and Alpine, New Jersey.

“The guns came out here and there. I always felt it was a little bit of a scare tactic,” she told the court.

Pic: CNN via AP
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This footage from 2016 was made public in 2024. Pic: CNN via AP

Towards the end of her first day of evidence, a surveillance video made public last year, which showed Combs allegedly beating Ms Ventura at a Los Angeles hotel in 2016, was played to jurors in court for a second time.

“How many times has he thrown you like that before?” prosecutor Emily Johnson asked her.

“Too many to count,” Ms Ventura replied.

On Monday, prosecutors in their opening statement told the court that while Combs’s public persona was that of a “charismatic” hip-hop mogul, behind the scenes he was violent and abusive.

His defence lawyers argued that the case is really about nothing more than the rapper’s sexual preferences, which they said should remain private, and do not make him a sex trafficker.

The trial is to last about eight weeks.

Ms Ventura is set to continue giving evidence on Wednesday.

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Sports

What to know about MLB lifting ban on Pete Rose, ‘Shoeless’ Joe Jackson

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What to know about MLB lifting ban on Pete Rose, 'Shoeless' Joe Jackson

Pete Rose, Joe Jackson, seven other members of the 1919 Chicago “Black Sox”, six other former players, one coach and one former owner are now eligible to be voted on for the Hall of Fame after commissioner Rob Manfred removed them from Major League Baseball’s permanently ineligible list.

Hall of Fame chairwoman Jane Forbes Clark said in a statement: “The National Baseball Hall of Fame has always maintained that anyone removed from Baseball’s permanently ineligible list will become eligible for Hall of Fame consideration. Major League Baseball’s decision to remove deceased individuals from the permanently ineligible list will allow for the Hall of Fame candidacy of such individuals to now be considered.”

Due to Hall of Fame voting procedures, Rose and Jackson won’t be eligible to be voted on until the Classic Era Baseball committee, which votes on individuals who made their biggest impact prior to 1980, meets in December of 2027.

Let’s dig into what all this means.


Why were these players banned?

All individuals on the banned list who were reinstated had been permanently ineligible due to accusations related to gambling related to baseball — either throwing games, accepting bribes, or like Rose, betting on baseball games.

Most of the banned players, including Jackson and his seven Chicago White Sox teammates who threw the 1919 World Series, played in the 1910s, when gambling in baseball was widespread. As historian Bill James once wrote, “Few simplifications of memory are as bizarre as the notion that the Black Sox scandal hit baseball out of the blue. … In fact, of course, the Black Sox scandal was merely the largest wart of a disease that had infested baseball at least a dozen years earlier and had grown, unchecked, to ravage the features of a generation.”

The most famous player, of course, was Jackson, one of baseball’s biggest stars alongside Ty Cobb and Tris Speaker in the 1910s. While many have tried to exonerate Jackson through the years, pointing out that he hit .375 in the 1919 World Series, baseball historians agree that Jackson was a willing participant in throwing the World Series and accepted money from the gambling ring that paid off the White Sox players.

While the White Sox players were acquitted in a criminal trial in 1921, commissioner Kenesaw Mountain Landis banned the eight players in a statement that began with the words “Regardless of the verdict of juries …”

If there was an innocent member in the group, it was third baseman Buck Weaver, not Jackson. Weaver had participated in meetings where the fixing of the World Series was discussed, and Landis banned him for life for guilty knowledge.

As for Rose, he was banned in 1989 by commissioner A. Bartlett Giamatti for betting on games while he was manager of the Cincinnati Reds, including those involving his own team. While Rose denied the accusations for years, he eventually confessed. He died last September at age 83.


Who else is impacted?

Phillies owner William Cox was banned in 1943 and forced to sell the team for betting on games. Cox had just purchased the team earlier that season. None of the other non-White Sox players are of major significance, although Benny Kauff was the big star of the Federal League in 1914-15, winning the batting title both seasons. The Federal League was a breakoff league that attempted to challenge the National and American leagues.


When is the soonest Rose and Jackson could go into the Hall of Fame?

The Hall of Fame voting process for players not considered by the Baseball Writers’ Association of America — such as Rose and Jackson, who never appeared on the ballot due to their banned status — includes two eras: the Contemporary Baseball Era (1980 to present) and the Classic Baseball Era (pre-1980). The voting periods are already set:

December 2025: Player ballot for the Contemporary Era.

December 2026: Contemporary Era ballot for managers, executives and umpires.

December 2027: Classic Era ballot for players, managers, executives and umpires.

Each committee has an initial screening to place eight candidates on the ballot, so Rose and Jackson will first have to make the ballot. While it’s unclear how a future screening committee will proceed, it’s possible that both will make the ballot. While comparisons to players with PED allegations aren’t exactly apples to apples — since they were never placed on the ineligible list — it’s worth noting that Barry Bonds, Roger Clemens and Rafael Palmeiro were included on the eight-player Contemporary Era ballot in 2023.

Once the ballot is determined — a 16-person committee consisting of Hall of Fame players, longtime executives and media members or historians — convenes and votes. A candidate must receive 12 votes to get selected. In the most recent election in December, Dave Parker and Dick Allen were on the Classic Era ballot.


Which players have the best HOF cases?

Obviously, Rose would have been a slam-dunk Hall of Famer had he never bet on baseball and had he appeared on the BBWAA ballot after his career ended. The all-time MLB leader with 4,256 hits, Rose won three batting titles and was the 1973 NL MVP. And while he’s overrated in a sense — his 79.6 career WAR is more in line with the likes of Jeff Bagwell, Brooks Robinson and Robin Yount than all-time elite superstars — and hung on well past his prime to break Ty Cobb’s hits record, his popularity and fame would have made him an inner-circle Hall of Famer.

Whether he’ll get support now is complicated. Bonds and Clemens both received fewer than four votes in 2023. The committee usually consists of eight former players, and they may not support Rose given the one hard and fast rule that every player knows: You can’t bet on the game.

Jackson, meanwhile, was a star of the deadball era, hitting .408 in 1911 and .356 in his career, an average that ranks fourth all time behind only Cobb, Negro Leagues star Oscar Charleston and Rogers Hornsby. He finished with 62.2 WAR and 1,772 hits in a career that ended at age 32 due to the ban. Those figures would be low for a Hall of Fame selection, although the era committees did recently elect Allen and Tony Oliva, both of whom finished with fewer than 2,000 hits. And again, it is hard to say how the committee will view Jackson’s connection to gambling on the sport.

The only other reinstated player with a semblance of a chance to get on a ballot is pitcher Eddie Cicotte, who won 209 games and finished with 59.7 WAR. While his final season came at 36, the knuckleballer was still going strong, having won 29 games for the White Sox in 1919 and 21 in 1920 before Landis banned him.

For what it’s worth, the top position players in career WAR who made their mark prior to 1980 and aren’t in the Hall of Fame are Rose, Bill Dahlen (75.3), Bobby Grich (71.0), Graig Nettles (67.6), Reggie Smith (64.6), Ken Boyer (62.8), Jackson and Sal Bando (61.5).

Pitching candidates would include Luis Tiant (65.7), Tommy John (61.6) and Wes Ferrell (60.1). John was on the recent ballot and received seven votes. Others on that ballot included Steve Garvey, Boyer, Negro Leagues pitcher John Donaldson, Negro Leagues manager Vic Harris and Tiant.

Other potential pre-1980 candidates could include Thurman Munson, Bert Campaneris, Dave Concepcion and Stan Hack.

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Politics

Civil service relocation and AI officials at heart of government cost cutting measures

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Civil service relocation and AI officials at heart of government cost cutting measures

AI civil servants and sending human workers out of London are at the heart of the government’s plans to cut costs and reduce the size of the state bureaucracy.

Shrinking the civil service has been a target of both the current Labour and recent Conservative governments – especially following the growth in the organisation during the pandemic.

From a low in 2016 of 384,000 full time workers, in 2024 there were 513,000 civil servants.

Politics latest: Your views on PM’s migration speech

The Department for Science, Innovation and Technology is claiming a new swathe of tools to help sift information submitted to public consultations could save “75,000 days of manual analysis every year” – roughly the work of 333 civil servants.

However, the time saved is expected to free up existing civil servants to do other work.

The suite of AI tools are known as “Humphrey”, after Humphrey Appleby, the fictional civil servant in the TV comedy Yes, Prime Minister.

The government has previously said the introduction of AI would help reduce the civil service headcount – with hopes it could save as much as £45bn.

Speaking today, Technology Secretary Peter Kyle appeared to take aim at expensive outsourcing contracts, saying: “No one should be wasting time on something AI can do quicker and better, let alone wasting millions of taxpayer pounds on outsourcing such work to contractors.”

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March: 10,000 officials could go

Move outside of London

Other money-saving plans announced today include moving 12,000 civil servants out of London and into regional hubs – with the government hoping it can save almost £100m by 2032 by not having to pay for expensive leases of prime office space in the capital.

Currently, 95,000 full time civil servants work in London.

Tens of millions of pounds a year are expected to be saved by the closure of 102 Petty France, which overlooks St James’s Park, and 39 Victoria Street, which is near the previous location of New Scotland Yard.

In total, 11 London offices are slated for closure, with workers being relocated to the likes of Aberdeen, Belfast, Darlington, Bristol, Manchester and Cardiff.

Read more:
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The reforms of the civil service are being led by Chancellor of the Duchy of Lancaster Pat McFadden – one of Sir Keir Starmer’s most influential ministers.

Mr McFadden said: “To deliver our plan for change, we are taking more decision-making out of Whitehall and moving it closer to communities all across the UK.

“By relocating thousands of civil service roles we will not only save taxpayers money, we will make this government one that better reflects the country it serves. We will also be making sure that government jobs support economic growth throughout the country.

“As we radically reform the state, we are going to make it much easier for talented people everywhere to join the civil service and help us rebuild Britain.”

The government says it wants senior civil servants out of the capital too – with the aim being that half of UK-based senior officials work in regional offices by the end of the decade.

The government claims the relocations and growth of regional hubs could add as much as £729m to local economies by 2030.

Pat McFadden delivers a keynote speech to the CyberUK conference.
Pic: PA
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Pat McFadden is leading the changes to the Civil Service. Pic: PA

Union welcome – cautiously

Unions appear to cautiously welcome the changes being proposed.

All of Prospect, the PCS and the FDA say it is positive to see better opportunities outside of the capital.

However, they have asked for clarity around whether roles may be lost and what will be offered to people transferring.

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Fran Heathcote, the general secretary of the PCS union, said: “If these government proposals are to be successful however, it’s important they do the right thing by workers currently based in London.

“That must include guarantees of no compulsory redundancies, no compulsory relocations and access to more flexible working arrangements to enable them to continue their careers should they wish to do so.”

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