Investigators believe about 23 structures have been destroyed in the fire and at least two people, a man and a woman, have died. A cause of death for both was pending Tuesday.
The blaze has burned more than 3,000 acres or nearly 5 square miles. About 450 firefighters from Colorado, Idaho, Nevada and Utah were sent to assist 250 firefighters on the ground as the fire mostly consumed grass, brush and some Ponderosa Pine tree canopies. While firefighters hoped winds would calm down Tuesday, they instead blew 20 mph to 30 mph in all directions.
Denver's tightly populated southwestern suburbs were not threatened.
Officials were trying to determine if the wildfire may have been a prescribed burn from last week that was whipped back up on a windy day.
The Associated Press contributed to this report.