Triple-digit heat and wildfire smoke

Triple-digit heat will again scorch the Denver area on Monday as wildfire smoke drifts in from the Pacific Northwest, clouding Colorado’s skies.

A heat advisory will be in effect for Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, Elbert, Jefferson and Weld counties until 6 p.m. Monday, according to the National Weather Service. Temperatures between 95 and 102 degrees are expected, according to the advisory.

In Denver, temperatures are expected to hit 100 degrees, according to the weather service. That would tie the city’s Aug. 3 heat record, which was set in 1878.

“Wildfire smoke has made a return after a few weeks of relatively good air quality across northwestern Colorado,” Colorado Department of Public Health and Environment officials wrote in a Monday morning statement on the Colorado Smoke Blog.

Heavy smoke was spotted in northern Colorado, including in Craig, Steamboat Springs, Walden and Granby, but was also spreading east across the Front Range, according to the agency.

As of Monday morning, an air quality health advisory had been issued for Boulder, Grand, Jackson, Larimer, Moffat, Rio Blanco and Routt counties, according to the agency.