Most homes are equipped with an HVAC — heating, ventilation, and air-conditioning — system to maintain a certain temperature ...

Heat waves are primarily caused by high-pressure systems that push warm air down onto an area and hold it there. During heat ...

The DNR is reporting an Air Quality Index level in the "Unhealthy" category for Milwaukee on June 4. The National Weather Service is urging sensitive groups, such as those with asthma, to limit ...

Air quality alert remains in effect for entire Chicago area. When will it improve? According to the NBC 5 Storm Team, the worst air quality in the country Friday was recorded in Ann Arbor, Michigan ...

An air quality alert has been issued for the entire state of Wisconsin. Smoke from Canadian wildfires will produce unhealthy air quality in Wisconsin on May 30.

An air quality advisory also was called for all of east-central, south-central and southeast Wisconsin. Current conditions at O’Hare International Airport are light rain, fog and drizzle at 66 ...

Smoke from raging Canadian wildfires is once again worsening air quality in some U.S. states.. Parts of the Dakotas, Minnesota, Wisconsin, Illinois, Indiana, Ohio and other states were all ...

NEW YORK (WABC) -- An Air Quality Alert has been re-issued by the National Weather Service for parts of the Tri-State area for Thursday, as ground-level ozone may approach or exceed unhealthy ...

The Lehigh Valley will be under a Code Orange air quality alert Wednesday due to smoke from wildfires in Canada, the Pennsylvania Department of Environmental Protection said.

Some air quality alerts remained in effect Friday evening, including in northern Minnesota, northern Indiana, southern Michigan and northern New York, according to the National Weather Service.