As a result, the air at the base of the flow experiences a decrease in pressure. This creates a low-pressure zone at the base and a high-pressure zone above it.

Italy's Mount Etna, Europe's tallest volcano, erupted on June 2, causing tourists to seek safety. Several videos online have shown people fleeing as smoke and ash billowed from the side of the ...

The upper-air flow is straight out of the north so the smoke should make it into southern Lower Michigan this afternoon. PM2.5 means Particulate Matter that is 2.5 microns wide or smaller.

In Lansing, as of 8 a.m. on May 30, the air quality was moderate (with a PM2.5 of 52) based on AirNow's Air Quality Index. AccuWeather says Lansing residents can expect to see hazy smoke Saturday.

Smoke from Canadian wildfires is impacting air quality in Michigan. Sensitive groups, including those with respiratory issues, are most at risk. Residents can monitor air quality through online ...