The EPA's Air Quality Index can tell you whether breathing outside air can be harmful. Here's how to read the scale to plan ...

The DEC has issued an air quality health advisory for most of upstate New York due to elevated levels of fine particulate ...

The Air Quality Index (AQI) is a national system developed by the U.S. Environmental Protection Agency (EPA) to translate various air pollutant concentrations into a single, easy-to-understand number.

The Illinois EPA declared an Air Pollution Action Day in the Chicago metro area. See today's air quality index forecast for Illinois.

From 8.30 am on Monday to 8.30 am on Tuesday, different parts of Delhi recorded varying amounts of rainfall, with 10.2 mm at ...

Redmond faced the worst air quality in the state Wednesday afternoon, with DEQ's air quality monitoring map showing "unhealthy" levels.

With wildfire smoke in the forecast, track the drop in air quality across dozens of PurpleAir sensors with our live, updating ...

According to Siskiyou County Public Health Officer Dr. Donald E. Solus and local air quality officials, while not all areas ...

Air pollution levels over Redding and parts of Shasta County are close to hazardous levels at times, due to heavy Green Fire ...

An air quality alert was issued by the National Weather Service in Milwaukee-Sullivan at 9:26 a.m. on Wednesday, July 16.

The Illinois Environmental Protection Agency has issued an Air Pollution Action Day for Tuesday, July 15. Here's what to know ...

Air quality is unhealthier-than-average for some people Thursday as winds are blowing wildfire smoke across the Northern ...