Chances for snow will start in Denver around sunset, but snowfall will be more likely to start between 7 and 9 p.m. Sunday, forecasters said.

The arctic blast has arrived in Denver with moderate snow and frigid temperatures taking over. The dangerous conditions are also in place across Colorado.

Nearly 300 flights were canceled or delayed at Denver International Airport on Sunday as a third day of below-freezing weather and snow buffeted the city, according to flight tracking data.