Several U.S. cities are experiencing heightened air pollution levels on Wednesday, including parts of Chicago.

A fast-moving wildfire continues burning in New Jersey’s Pine Barrens as of Wednesday afternoon — already consuming 12,000 ...

Canadian wildfires caused the county to earn a C in the association's report for both 24-hour particle (soot) and ozone pollution (smog).

Dhaka, the overcrowded capital city of Bangladesh, has ranked 14th on the list of cities with the worst air quality with an AQI score of 106 at 10:30am Tuesday morning. Tuesday’s air was classified as ...

"An alert for possible Moderate (Air Quality Index yellow category) to Unhealthy for Sensitive Groups (Air Quality Index orange category) due to smoke has been issued for the following Nebraska ...

"An alert for possible Moderate (Air Quality Index yellow category) to Unhealthy for Sensitive Groups (Air Quality Index orange category) due to smoke has been issued for the following Nebraska ...

South Carolina has several counties under air quality alerts due to the wildfires in the northern part of the state and Western North Carolina.

"An alert for possible Moderate (Air Quality Index yellow category) to Unhealthy for Sensitive Groups (Air Quality Index orange category) due to smoke has been issued for the following Nebraska ...

"An alert for possible Moderate (Air Quality Index yellow category) to Unhealthy for Sensitive Groups (Air Quality Index orange category) due to smoke has been issued for the following Nebraska ...