Most of Long Island is under an extreme heat warning Tuesday as temperatures are expected to reach dangerous heat index ...

A code orange alert has been issued for the Lehigh Valley and eastern Pennsylvania on Monday due to elevated ozone levels as ...

The alert will remain go into effect starting at midnight on Saturday, June 21, through Monday, June 23, for counties in Ohio ...

An Air Quality Alert has been issued for the Miami Valley from Saturday (June 21) through Monday (June 23). The Miami Valley ...

Canadian wildfire smoke lingers over the Greater Lansing area on June 6. The entire Lower Peninsula is under an air quality advisory.

Columbus' air quality is once again expected to become unhealthy for sensitive groups on June 12 due to smoke and ozone ...

New York's first major heat wave of the year is causing poor air quality conditions in the Lower Hudson Valley Tuesday, June ...

The worst air in the country on June 14 is in New Castle County. The air quality index in Wilmington as of 9:45 a.m. was 227, ...

The Pennsylvania Department of Environmental Protection has issued a Code Orange Air Quality Alert for Erie County, signaling ...

This edition of Weather Tidbits will be discussing the air quality index. The air quality index, or AQI, is a scale used to report daily air quality with associated health effects. An AQI of 0-50 ...

An air quality advisory for Long Island is the result of smoke from Canada wildfires, New York State officials say.

An air quality map shows conditions improving in the U.S. on Friday as smoke from the Canadian wildfires subsides.