Thousands of people in southern California were advised to remain indoors as "emergency" air quality conditions hit parts of the Coachella Valley.

Wildfire smoke has been visiting the Midwest more frequently, making it more important to know how to find your area's air quality index.

An air quality alert remains in effect for the entire Chicago area, with another "Air Pollution Action Day" alert declared as wildfire smoke from Canadian wildfires continues to impact parts of the ...

This level falls under the ‘very unhealthy’ category, exceeding the recommended safe AQI below 50. In response, local authorities and the Environment Protection Agency (EPA) ordered a three-month ...

The AQMD tests in the Eaton fire footprint backs up EPA’s claim that workers removing ... you are blind to that.” The AQMD’s Air Quality Index, which grades the air in numbers with colors ...

The AQMD tests in the Eaton fire footprint backs up EPA’s claim that workers removing household ... you are blind to that.” The AQMD’s Air Quality Index, which grades the air in numbers with colors ...

Here is the Air Quality Index chart from the Centers for Disease Control ... PM2.5, according to the EPA, refers to fine particulate matter that measures 2.5 micrometers or smaller in diameter ...

Residents of Lahore are suffering from the toxic haze that has pushed the city’s Air Quality Index to off-the-chart levels by U.S. standards.CreditCredit...Rahat Dar/EPA, via Shutterstock By Yan ...

Last month, the U.S. Environmental Protection Agency and the U.S. Department of Agriculture’s Forest Service released an updated version of the popular AirNow Fire and Smoke Map to provide millions of ...

11, causing local air quality meters to return off-the-chart readings for particulate ... denotes “hazardous” conditions. An air quality index above 150 is considered unhealthy for everyone.