Canadian wildfires continue to burn, and plumes of smoke hang over Michigan especially in the Upper Peninsula.

As Canadian wildfires burn, northern Michigan areas and the Upper Peninsula have been upgraded to an air quality alert.

Earlier in the day, the reading in Houghton Michigan, to the west in the Keweenaw Peninsula, was over 900. Several readings ... Groups (USG, Orange air quality index (AQI) threshold.

Pollutants could reach the Unhealthy (Red AQI) range or higher," the NWS in Marquette ... Houghton, Michigan, saw an index reading over 900 and Marquette had a reading above 800 on June 3.

This was on a day that the average AQI of Delhi as a whole hit 494 — the ... PM 2.5 levels — the Capital’s hourly load crossed 900 micrograms per cubic metre (µg/m3) at multiple stations ...

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

Heavier rainfalls that lead to deadly flash floods. Droughts that spark wildfires. Soaring summertime temperatures. And a ...

“But it’s not terrible. We’ve had it before, but it’s been way worse.” The EPA’s Air Quality Index measures how polluted the air we breathe is on a daily basis. It focuses on the ...

Residents can monitor air quality through resources like the MiAir Quality Index Dashboard and AirNow. The Air Quality Index (AQI) uses a color-coded system to inform the public about air quality ...