Cities forecasted to see levels of ozone that are "unhealthy for sensitive groups" include Danbury, Hartford, Middletown and ...

Canadian wildfire smoke no longer lingers in Michigan as of July 18. Southwest Michigan will experience unhealthy air for sensitive groups on July 21.

Canadian wildfire smoke returned to Wisconsin this weekend, with unhealthy levels for people with asthma and heart disease.

An Air Quality Alert has been issued for parts of northern New York and Vermont today because of Canadian wildfire smoke.

If you have breathing problems, be sure to take it easy on Wednesday and limit outdoor time. Air quality will be unhealthy ...

As of Tuesday morning, the Air Quality Index in Milwaukee was between 115 to 120, which falls in the "unhealthy for sensitive groups" category.

Today Dhaka’s air was classified as ‘unhealthy for sensitive groups’ referring to a health threat, according to the AQI index ...

You may have noticed some haze in the sky, as well as a cherry red sunrise this morning. Here's what to know about air ...

GRAND RAPIDS, Mich. (WOOD) — The air quality Tuesday for a number of West Michigan counties has been flagged as “unhealthy for sensitive groups,” environmental officials say.

In addition, concentrations of fine particle air pollution are expected to reach unhealthy levels for sensitive individuals at elevations above 3,000 feet on Wednesday June 4.

“These conditions will allow ozone to reach the Unhealthy for Sensitive Groups (USG) category in areas along and south of the I-95 corridor.