Quick update: The air quality here is not very good. Riding down from Nederland this morning, the air was clear (and a bit cold ~40F) but by 8:30, the area around Boulder was blanketed in a shroud of smoke. It smelled like a camp fire and my eyes burned riding from Table Mesa to Gunbarrel. Near Ft Collins, the plume from the High Park Fire is being blown eastward then spreading out.

Air quality Index - note that the maps can't take into account the topography so there are areas that are worse and better than others. For instance Table Mesa / South Boulder Road near 76th street is quite smokey while in Gunbarrel, 3 miles away, it is significantly clearer.

Panorama looking northeast, to east, to south, to northwest  (http://www.esrl.noaa.gov/psd/technology/bao/webcam/)

Looking toward the Flatirons (http://boulderflatironcam.com/)

 Meanwhile @ 8000 feet... its clear (http://nedcam.nednet.net/)