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The Bootleg Fire rages across central Oregon state, in Klamath County, Oregon, in this July 13, 2021 picture obtained from social media.
Oregon State Fire Marshal | via Reuters

Air quality in the United States and Europe improved over the last decade thanks to stricter environmental regulations, but intensifying wildfires raise new air pollution concerns.

The National Interagency Fire Center reported that, as of August 8, there were 107 large active fires that had burned more than 2.2 million acres domestically across 15 states so far this year. In Europe, wildfires in Greece and Turkey are raging amid record heat waves now as well.

As a result, more people are turning to mobile apps to understand when air quality is better or worse, wherever they may be. These apps use a mix of data from government-operated satellites, or weather, fire and ambient air quality stations, as well as sensors and systems run by private sector entities. Some are even crowdsourced from relatively affordable air quality sensors sold by companies such as PurpleAir and IQAir.

Air quality apps

According to senior mobile insights analyst Jonathan Briskman of Sensor Tower, the top-rated apps for outdoor air quality monitoring in the U.S. between January 2020 and July 2021 have been: AirCare, AirVisual, and South Coast AQMD, based on ratings from the App Store, and Google Play.

The AirCare app shows air pollution, active fires, wind conditions and pollen levels on a map.
CNBC

Here’s what those three apps do:

  • AirCare, made by developers in Northern Macedonia, is available for iOS and Android mobile devices, including iPhones, iPads, Apple Watch and Huawei smartphones, among many others. Tiers include a free, ad-supported version, a 99 cents ad-free version, and at the premium level, a $14.99 annual subscription for a pro-version. The app includes kid-friendly air pollution information, charts and maps that show pollutant levels derived from government-run sensors and stations, alongside volunteers’ PurpleAir and other sensors throughout the U.S., Europe and Australia. In some major metro areas, the app also tracks ultra-violet and pollen levels.
  • AirVisual, made by the Swiss air quality company IQAir, tracks air pollution in more than 10,000 cities and 80 countries drawing on data from tens of thousands of sensors, some positioned at U.S. embassies overseas. The company’s free mobile apps are also ad-free and available for iOS and Android devices. Besides real-time maps that show levels of six different types of major pollutants, IQAir’s AirVisual and mobile website provide seven-day air pollution and weather forecasts, along with air pollution-related news and health information. The apps can pair with the company’s own sensors, including the portable AirVisual Pro sold for around $269.
  • South Coast AQMD, is a free and ad-free app run by the local air pollution agency in Southern California of the same name and tracks air pollution across Orange County, Los Angeles, Riverside and San Bernardino, specifically. It features real-time and forecasted air quality and weather conditions, and maps that show where drivers can charge their electric vehicles or find other non-traditional fueling stations. It also includes information about upcoming local events and political hearings related to air quality issues to encourage community participation. The app is available in both English and Spanish for Apple and Android devices.
The South Coast AQMD app shows air pollution levels in Greater Los Angeles.
CNBC

The five most popular air quality apps in the U.S., based on installs since the start of 2020, according to Sensor Tower included two of those top-rated apps, AirVisual (from IQ Air) and Air Care, as well as the U.S. Environmental Protection Agency’s app AirNow, an app from venture-backed startup Breezometer that shows air quality, pollen and active fire data, and an app called Oregon Air developed for the Oregon Department of Environmental Quality.

Use of these apps, and new installs are often driven by regional events. As of August 8, 2021 there were 16 large active fires searing through Oregon according to the NIFC.

How air pollution impacts health

Air quality monitoring and measurement are critical for public health, says Yanelli Nunez, a postdoctoral research scientist at Columbia University’s Mailman School of Public Health.

She notes that robust studies have shown that air pollution contributes to lung cancer, chronic obstructive pulmonary disease, and lower respiratory infections, and even impacts mortality, pregnancy outcomes and cardiovascular disease.

Nunez works in an environmental health sciences laboratory with Marianthi-Anna Kioumourtzoglou. Their research has also found long-term exposure to air pollution can affect the nervous system and may influence functions such as memory or cognitive capabilities.

The scientists wrote in an e-mail to CNBC: “Americans living in poor air quality areas tend to be people of color or low-income communities. We are finally starting to pay more attention to these issues, which hopefully will lead to change. The air pollution composition is also changing.”

In one example, greenhouse gas emissions from transportation declined in New York City from 2014 to 2017, while commercial cooking emissions rose.

With increased wildfires, the scientists wrote, “The sources and composition of the air pollution mixture that we are experiencing could differently impact our health, so we need to better understand source-specific effects, especially for these newly prominent sources.”

Indoor air matters, too

While outdoor air quality is important, society doesn’t talk or do enough about indoor air quality, said Richard Corsi, UC Davis’ incoming dean of the college of engineering, currently a professor and dean at Portland State University.

Using pre-pandemic numbers, Corsi explained that the average American would spend almost 70 out of 79 years of their life domiciled inside of buildings. “Because we spend so much time indoors, even our exposure to pollutants of outdoor origin is dominated by what we breathe there, especially in our homes,” he said.

Pollutants of outdoor origin which come from the likes of internal combustion engine vehicles, photochemical smog, refineries and wildfires can get into homes and buildings when doors and windows are opened, when heat and air conditioning systems are used, or through other cracks in the building envelope.

Consumer apps and devices today don’t give users an absolute, precise measurement down to micrograms per cubic meter of a given pollutant, Corsi noted. But they’re very valuable for spotting trends and relative changes in air quality.

Sensors set up indoors can work well to check whether protective measures are working to improve the air inside of a house, school or other building.

Especially during wildfire season, Corsi said, some other simple actions that can protect or improve air quality indoors include: wet-mopping floors and wiping surfaces so pollutants don’t accumulate, using HEPA or high-efficiency particulate air filters, and increasing the MERV or minimum efficiency reporting value of filters in central air systems in a house.

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Software startup deploys Singapore’s first quantum computer for commercial use

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Software startup deploys Singapore’s first quantum computer for commercial use

Inside Horizon Quantum’s office in Singapore on Dec. 3, 2025. The software firm claimed it is the first private company to deploy a commercial quantum computer in the city-state.

Sha Ying | CNBC International

Singapore-based software firm Horizon Quantum on Wednesday said it has become the first private company to run a quantum computer for commercial use in the city-state, marking a milestone ahead of its plans to list in the U.S.

The start-up, founded in 2018 by quantum researcher Joe Fitzsimons, said the machine is now fully operational. It integrates components from quantum computing suppliers, including Maybell Quantum, Quantum Machines and Rigetti Computing.

According to Horizon Quantum, the new computer also makes it the first pure-play quantum software firm to own its own quantum computer — an integration it hopes will help advance the promising technology.

“Our focus is on helping developers to start harnessing quantum computers to do real-world work,” Fitzsimons, the CEO, told CNBC. “How do we take full advantage of these systems? How do we program them?” 

Horizon Quantum builds the software tools and infrastructure needed to power applications for quantum computing systems. 

“Although we’re very much focused on the software side, it’s really important to understand how the stack works down to the physical level … that’s the reason we have a test bed now,” Fitzsimons said. 

Quantum race

Horizon Quantum hopes to use its new hardware to accelerate the development of real-world quantum applications across industries, from pharmaceuticals to finance.

Quantum systems aim to tackle problems too complex for traditional machines by leveraging principles of quantum mechanics.

For example, designing new drugs, which requires simulating molecular interactions, or running millions of scenarios to assess portfolio risk, can be slow and computationally costly for conventional machines. Quantum computing is expected to provide faster, more accurate models to tackle these problems.

A top executive at Google working on quantum computers told CNBC in March that he believes the technology is only five years away from running practical applications.

Still, today’s quantum systems remain in the nascent stages of development and pose many engineering and programming challenges.

Investment in the space has been rising, however, as major tech companies report technological breakthroughs. Alphabet, Microsoft, Amazon and IBM, along with the U.S. government, are already pouring millions into quantum computing.

Investor attention also received a bump in June after Nvidia chief executive Jensen Huang offered upbeat remarks, saying quantum computing is nearing an “inflection point” and that practical uses may arrive sooner than he had expected.

Nvidia CEO: Quantum computing is reaching an inflection point

Nasdaq listing

Horizon Quantum’s announcement comes ahead of a merger with dMY Squared Technology Group Inc., a special purpose acquisition company. The deal, agreed upon in September, aims to take Horizon public on the Nasdaq under the ticker “HQ.”

The software firm said in September that the transaction valued the company at around $503 million and was expected to close in the first quarter of 2026. 

The launch of its quantum computer also helps cement Singapore’s ambition to be a regional quantum computing hub. The city-state has invested heavily in the technology for years, setting up its first quantum research center in 2007.

Before Horizon Quantum’s system came online, Singapore reportedly had one quantum computer, used primarily for research purposes. Meanwhile, U.S.-based firm Quantinuum plans to deploy another commercial system in 2026.

Singapore’s National Quantum Strategy, unveiled in May 2024, committed 300 million Singapore dollars over five years to expand the sector, with a significant portion directed toward building local quantum computer processors.  

In May 2024, the National Quantum Strategy (NQS), Singapore’s national quantum initiative, pledged around S$300 million over five years to strengthen development in the sector, with a significant portion directed toward building local quantum computer processors.

Why Amazon, Google, Microsoft, IBM and numerous startups are racing to build quantum computers

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A little-known startup just used AI to make a moon dust battery for Blue Origin

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A little-known startup just used AI to make a moon dust battery for Blue Origin

Istari Digital CEO Will Roper talks about the AI technology that built the Blue Origin moon vacuum

Artificial intelligence has created a device that turns moon dust into energy.

The moon vacuum, which was unveiled on Wednesday by Blue Origin at Amazon‘s re:Invent 2025 conference in Las Vegas, was built using critical technology from startup Istari Digital.

“So what it does is sucks up moon dust and it extracts the heat from it so it can be used as an energy source, like turning moon dust into a battery,” Istari CEO Will Roper told CNBC’s Morgan Brennan.

Spacecraft carrying out missions on the lunar surface are typically constrained by lunar night, the two-week period every 28 days during which the moon is cast in darkness and temperatures experience extreme drops, crippling hardware and rendering it useless unless a strong, long-lasting power source is present.

“Kind of like vacuuming at home, but creating your own electricity while you do it,” he added.

The battery was completely designed by AI, said Roper, who was assistant secretary of the Air Force under President Donald Trump‘s first term and is known for transforming the acquisition process at both the Air Force and, at the time, the newly created Space Force.

Read more CNBC tech news

A major part of the breakthrough in Istari’s technology is the way in which it handles and limits AI hallucinations.

Roper said the platform takes all the requirements a part needs and creates guardrails or a “fence around the playground” that the AI can’t leave while coming up with designs.

“Within that playground, AI can generate to its heart’s content,” he said.

“In the case of Blue Origin’s moon battery, [it] doesn’t tell you the design was a good one, but it tells us that all of the requirements were met, the standards were met, things like that that you got to check before you go operational,” he added.

Istari is backed by former Google CEO Eric Schmidt and already works with the U.S. government, including as a prime contractor with Lockheed Martin on the experimental x-56A unmanned aircraft.

Watch the full interview above and go deeper into the business of the stars with the Manifest Space podcast.

X-Energy’s Kam Ghaffarian on Nuclear Power, AI, and the Space Tech Race

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Nvidia CEO Jensen Huang talks chip restrictions with Trump, blasts state-by-state AI regulations

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Nvidia CEO Jensen Huang talks chip restrictions with Trump, blasts state-by-state AI regulations

Jensen Huang: State-by-state AI regulation would drag industry to a halt

Nvidia CEO Jensen Huang said he met with President Donald Trump on Wednesday and that the two men discussed chip export restrictions, as lawmakers consider a proposal to limit exports of advanced artificial intelligence chips to nations like China.

“I’ve said it repeatedly that we support export controls, and that we should ensure that American companies have the best and the most and first,” Huang told reporters on Capitol Hill.

Lawmakers were considering including the Guaranteeing Access and Innovation for National Artificial Intelligence Act in a major defense package, known as the National Defense Authorization Act. The GAIN AI Act would require chipmakers like Nvidia and Advanced Micro Devices to give U.S. companies first pick on their AI chips before selling them in countries like China.

The proposal isn’t expected to be part of the NDAA, Bloomberg reported, citing a person familiar with the matter.

Huang said it was “wise” that the proposal is being left out of the annual defense policy bill.

“The GAIN AI Act is even more detrimental to the United States than the AI Diffusion Act,” Huang said.

Nvidia’s CEO also criticized the idea of establishing a patchwork of state laws regulating AI. The notion of state-by-state regulation has generated pushback from tech companies and spurred the creation of a super PAC called “Leading the Future,” which is backed by the AI industry.

“State-by-state AI regulation would drag this industry into a halt and it would create a national security concern, as we need to make sure that the United States advances AI technology as quickly as possible,” Huang said. “A federal AI regulation is the wisest.”

Trump last month urged legislators to include a provision in the NDAA that would preempt state AI laws in favor of “one federal standard.”

But House Majority Leader Steve Scalise (R-LA) told CNBC’s Emily Wilkins on Tuesday the provision won’t make it into the bill, citing a lack of sufficient support. He and other lawmakers will continue to look for ways to establish a national standard on AI, Scalise added.

WATCH: Nvidia currying favor to be able to sell chips in China

Nvidia obviously currying favor to be able to sell chips in China, says Niles Investment's Dan Niles

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