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 ...

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

The National Weather Service has issued both a heat and air quality alert for most of downstate New York, Wednesday, July 16.

Additional plumes of smoke from Canada's active wildfires prompt officials to issue a statewide air quality alert on July 14.

Dhaka, the overcrowded capital city of Bangladesh, ranked 22nd on the list of cities with the worst air quality, ...

Telangana's capital city Hyderabad will experience misty weather today. The temperature will range from 25.3 to 29.4 degrees ...

Andhra Pradesh's capital city Amravati is expected to experience patchy rainfall throughout the day, with temperatures ...

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 ...

An Air Quality Alert has been issued for Koochiching County and the northern portion of St. Louis County, in effect until 1 ...

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.

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