Triple-digit heat again scorched the Denver area on Monday as wildfire smoke drifted in from Utah and the Pacific Northwest, clouding Colorado’s skies.

A heat advisory was 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 were expected, according to the advisory.

In Denver, temperatures hit 102 degrees, according to the weather service. That broke the city’s Aug. 3 heat record of 100 degrees, 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.

“Areas of moderate to heavy smoke from out-of-state wildfires will be possible within the advisory area through at least Tuesday morning,” state health officials wrote in the alert.

A large contributor to Colorado’s smoky skies was wildfires burning in Utah, and additional smoke was expected to reach the state from fires burning in Washington, Oregon and British Columbia, according to the weather service.

This is a developing story and may be updated. 

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