Air Quality

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

Kevin Jeanes has the latest forecast.

Iisha Scott has the latest forecast update for the Chicago area.

There’s a state of emergency in the Canadian province of Manitoba where wildfires have forced thousands of people to evacuate.

Man-made air pollution has decreased in recent years — but overall air pollution is worsening due in part to wildfires sweeping smog across the country, according to a new analysis.

Chicago’s air quality is among the worst in the U.S. according to a new ranking, but what’s driving the increase in pollution?

Man-made air pollution is decreasing, but overall air pollution is worse due in part of wildfire smoke, according to a new analysis.

A new study on air quality found that Los Angeles was the most polluted major U.S. city, while Seattle was the cleanest.

Ash from the recent LA County fires and burn scars formed by other wildfires in the fall can be dispersed by strong winds. See an air quality map.

The ongoing wildfires have put the Los Angeles area under an air quality alert, with the National Weather Service advising SoCal residents to remain indoors with their windows closed and wear N-95 masks if they have to go outside.

An air quality alert has been issued for parts of northwest Indiana, with some residents advised to limit their time outdoors due to elevated ozone levels.

Alicia Roman has the latest forecast for the Chicago area.

Poor air quality was expected across the entire Chicago area Tuesday as an “air quality alert” was issued for all of Northeastern Illinois and Northwest Indiana through midnight.

Alicia Roman has the latest forecast.

Jenn Schanz has details from experts on how to stay safe during excessive heat in the Chicago area.

With heat and humidity building in the Chicago area, an air quality alert has been issued as officials warn of elevated ozone and particulate levels.

Hot days ahead with a slight chance of storms today and Sunday morning

Wildfire smoke from western Canada and the western United States could create some air quality issues in the Chicago area this week.

Alicia Roman has the latest forecast.

An air quality alert is in effect for some parts of the Chicago as heat and humidity continue across the area for a fourth straight day.