To see the northern lights in Colorado, a KP index of 5 or higher is usually needed. The KP index measures geomagnetic ...

After a really cold Tuesday, Colorado will fall even colder on Wednesday. The record low in Denver is -4 degrees, and the current forecast is -3°.

Storm Warnings are in effect across Colorado's mountains with 1-3 feet of snow possible with hazardous driving conditions ...

Vail Pass was closed as of 4:45 p.m., as was westbound Interstate 70 east of Aurora. Colorado 119 spanning Boulder Canyon between Boulder and Nederland closed amid the snow but has since reopened ...

The fear that ICE agents could show up at schools has led students to miss class — even before Wednesday’s raids, one teacher ...

but the warm weather didn’t last as a winter storm moved into the state, leaving almost half a foot of snow in some areas across Colorado.

Colorado. Zambrano-Pacheco has since been hiding out in New York City, according to authorities. Alleged gang activity in Aurora came to national attention in August after the surveillance video ...