Two wildfires that started over the weekend on Colorado’s Western Slope have consumed more than 20,000 acres and destroyed at least three buildings, according to fire officials.

Another disaster emergency has been declared in western Colorado due to wildfires burning across the western half of the state.Late Monday night, Gov. Jared Polis verbally declared a disaster emergency to support efforts to bring the LeRoux Fire in Delta County under control.

The Leroux Fire has already burnt approximately 700 acres of private and BLM land. Firefighters from the Crawford-Hotchkiss Fire District, the BLM, the Forest Service and the National Park Service are battling the blaze.

Fires currently burning in western Colorado, Utah and beyond have caused the air quality in Colorado's Front Range to diminish.

The air quality in several U.S. states is taking a hit as smoke floats over the border from the Canadian wildfires. Here's what to know.

Air quality has taken a serious hit across the United States as a twofold blow of wildfires in the West and in Canada have sent smoke pouring across large sections of the country — a problem that’s set to linger for days.