The U.S. Air Quality Index (AQI) is the Environmental Protection Agency’s tool for reporting outdoor air quality and health. The AQI includes six color-coded categories, each corresponding to a range ...

Matt Fuchs lives in Maryland and writes about health, science, and technology. Matt Fuchs lives in Maryland and writes about health, science, and technology. When George Thurston leaves his cottage in ...

The National Weather Service has issued several air quality alerts for parts of the Midwest including Chicago and the surrounding suburbs as unhealthy smoke from Canadian wildfires continues to move ...

Those participating in Running for Clean Air are making great efforts to improve air quality in their cities. If you would ...

After Canadian wildfires brought extremely poor air quality to Detroit in the summers of 2023 and 2025, Michigan is updating ...

An Air Quality Alert for Chicago and the suburbs has been extended through Friday as smoke from Canadian wildfires continues to blanket the area and push the AQI into red levels. The National Weather ...

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 ...

Officials warn dust pollution can penetrate lungs, triggering asthma and heart problems, especially for vulnerable groups.

Philadelphia residents now can monitor the air quality in their neighborhoods in real time by checking a website that pulls in data from 76 air quality sensors installed throughout the city in recent ...

TRACKING TEMPERATURES AND AIR QUALITY, AND TEMPERATURES ARE UP A FEW DEGREES COMPARED TO THIS TIME YESTERDAY. SO WE’RE AT 101 AT EXECUTIVE AIRPORT IN SACRAMENTO, 103 IN STOCKTON, 100 IN FAIRFIELD, ...