Prepare for poor air quality from Canadian wildfire smoke and rising temperatures today, with rain and thunderstorms expected to return midweek.

More than 100 of the blazes are in the United States, including three dozen uncontained large fires, according to the National Interagency Fire Center. At least 14 major fires began over the weekend. The Canadian fire season continues to climb the list of worst on record, just recently surpassing last year in the top five for most acreage burned.

Smoke from wildfires in Canada and Idaho barreled into Montana on Monday afternoon, rapidly degrading air quality across the Flathead Valley ahead of a major shift to cold and wet weather. Monitoring stations showed particulate matter concentrations worsening at around noon Monday as air quality lowered to moderate levels in Libby,

Hazy skies return to the forecast as wildfire smoke from Canada moves back into the state. While skies remain hazy, we see temperatures comfortable for a few days before heat, humidity, and the chance for showers and storms return.

Wildfire smoke from Canada will create hazy sunshine again Monday as temperatures rise into the upper 80s. Get the latest forecast from the FOX 17 Weather Ready team.

KSTP FORECAST FIRST ALERT TODAY FOR TWIN CITIES/WESTERN WISCONSIN BECAUSE OF CANADIAN WILDFIRE SMOKE PRODUCING UNHEALTHY LEVELS OF SMOKE ESPECIALLY NOW UNTIL NOON TODAY: Expect Areas of Dense Smoke from Canadian Wildfires this morning in the Twin Cities and surrounding areas now until the Noon Hour Today.

Several U.S. members of Congress are urging action by the Canadian government on wildfires, saying smoke from the flames is impacting Americans' ability to enjoy summer.

U.S. Rep. Brad Finstad, who represents Minnesota's First Congressional District, co-led a letter to Canada's ambassador to the U.S., writing to "know how your government plans on mitigating wildfire and the smoke that makes its way south.