Wildfires in Canada are sending heavy smoke across the northern U.S., and New Jersey is experiencing some unhealthy air ...

Red flag warnings remain in place for parts of Nevada, Utah, Colorado and Wyoming due to very dry conditions, low humidity ...

Another air quality alert is in effect Tuesday for NYC, western Long Island, the Hudson Valley, northwest New Jersey and ...

Smoke from hundreds of wildfires in Canada is lingering over the northern U.S., spreading across to roughly a dozen states ...

Air quality has taken a serious hit across the United States as a two-fold blow of wildfires in the West and in Canada have ...

The air quality in several U.S. states is taking a hit as smoke floats over the border from the Canadian wildfires. Here's ...

With hundreds of wildfires burning across Canada, smoke has drifted into the northern United States, lowering air quality ...

MINNEAPOLIS (FOX 9) - An air quality alert has been issued for all of Minnesota starting Sunday due to wildfire smoke from ...

The air quality index, or AQI, measures the air quality and level of health concern it presents as measured by the Environmental Protection Agency. The AQI is measured on a scale of 0 to 500.

An air quality advisory is in effect for the Lower Peninsula of Michigan due to wildfire smoke from Canada. Sensitive groups, such as those with respiratory issues, should limit outdoor activities.

An air quality alert has been issued for the New York metro area Tuesday, Aug. 12, as high temperatures contribute to increased ozone levels.

In Lansing, as of 10 a.m. on June 4, AirNow's Air Quality Index reflected a "moderate" reading with a PM2.5 of 81 — meaning the sensitive groups may be harmed by poor air quality, and people ...