If you can't see the map, click here Winds furthered the ... to US Intense summer heatwave to takeover major US cities Higher ...

according to the fire and smoke map maintained by AirNow.gov, which monitors air quality. USA TODAY reports Minnesota officials issued an air quality advisory due to the smoke on Monday.

Wildfire smoke creates fine particulate matter that can linger in the atmosphere and spread from coast to coast. According to the US Environmental Protection Agency (EPA), in large quantities ...

There are many pollutants of concern in wildfire smoke,” including ozone, carbon monoxide and other toxic gases, says pediatrician Debra Hendrickson.