An air quality advisory is in effect for downstate New York on Friday. Limit outdoor activity if you are at risk.

PHILADELPHIA (WPVI) -- With smoke blowing into the Philadelphia region from the wildfires in Canada, you may have heard a lot about the Air Quality Index or AQI. But what it is, exactly? The Air ...

With elevated pollution levels, the New York State Department of Health recommends individuals consider limiting strenuous ...

After fires destroyed multiple neighborhoods across Los Angeles County, many residents looked up to find blue, smoke-free skies this week. The Air Quality Index (AQI) — which measures the ...

Over the past five years, as California wildfires increased in both intensity and scope, fall in the Bay Area has meant skies intermittently shrouded in smoke. This season, my morning routine has not ...

An air quality alert was issued by the National Weather Service in Mount Holly at 3:45 p.m. on Friday, June 5.

A second day of poor air quality alerts were issued for southeast Wisconsin June 4. Warning spread up to northeast Wisconsin ...