The Sacramento region's air quality reached "unhealthy for sensitive groups" level on Thursday morning, according to IQAir.

Northeast Ohio is under an air quality alert due to elevated levels of ozone or particulate matter. The Air Quality Index (AQI) is currently at a level unhealthy for sensitive groups like those with ...

Weather conditions trapping wood smoke pollution near the ground prompted the Bay Area Air District to issue a Spare the Air ...

AND NOW THAT WE HAVE HAD SOME POLLUTION BUILD UP THAT ALSO THAT ALSO CREATES AN ATMOSPHERE FOR MORE FOG TO DEVELOP AS WELL.

It wasn’t that long ago that few people were monitoring the air—not the government, not its citizens. Today, weather apps provide estimates of outdoor air quality, and the government’s own air quality ...

Columbus' air quality worsened due to Canadian wildfire smoke drifting over the city, turning the air unhealthy for sensitive groups, according to AirNow.gov. The city's air quality index (AQI) score ...

If you’re in eastern Pennsylvania or New Jersey and noticed a haze in the sky Sunday morning, you weren’t imagining things. Due to smoke from Canadian wildfires, the air quality index over much of the ...

Hazy skies in the Phoenix area were caused by overnight wind gusts lofting dust particles. Stagnant weather conditions contributed to a high pollution advisory for Maricopa County. Phoenix's poor air ...

Smoke from Canadian wildfires is once again impacting air quality in the Chicago area, with air quality index readings Thursday morning in the "unhealthy" category for some suburbs, according to ...

Editor's Note: An air quality alert has been issued for northwest Indiana, starting at midnight and continuing in Tuesday. Air quality across the Chicago area is once again in the "unhealthy" category ...

Another air quality advisory is in effect across Milwaukee on Tuesday, July 15. Milwaukee, Ozaukee, Racine, Kenosha and Sheboygan counties are all under a poor air quality alert from noon to 11 p.m., ...