The days are getting longer and warmer. Tuesday’s high in Montreal will be 25 C, with a UV index of 7, or high. By afternoon, ...

Ozone is a gas comprised of three oxygen (O3) atoms. It is unstable and reacts easily to other gases. In its natural state, it is a component in several levels of the atmosphere. At high altitudes ...

Saskatchewan has declared a state of emergency in response to the wildfires ravaging northern parts of the province.

Delhi Airport is the only Indian airport to be among top 10 hub airports in the Asia-Pacific and Middle East region, ...

Wildfires in Canadian provinces of Manitoba and Saskatchewan are creating smoke visible in Michigan. How to use the air ...

Minnesota remains under an air quality alert for the next few days, with smoke from wildfires in Canada spreading across the ...

This map tracks air quality near Detroit, and zoom out to see more areas. Smoke from wildfires in Canada is expected to move into Michigan.

A measure called the Air Quality Index gauges just how bad the air has become in a particular place. Readings of 100 or higher usually serve as a warning to people who have respiratory conditions ...

Air quality in some parts of the United States is being compromised as smoke from dozens of wildfires in Canada travels south, pushed by winds high in the atmosphere. The Environmental ...

Areas throughout the Midwest, including parts of Minnesota, will see their air quality impacted by smoke from wildfires burning in Canada this weekend. The smoke is prompting several communities to ...