Sky9 shot some video of Denver Monday afternoon showing a layer of clouds clinging to the city, with only the tops of the tall buildings sticking out above.

It’s eerie and almost beautiful to see … but it’s also a little sad because that cloud is mostly smog.

Our pollution Monday got trapped around the city due to a stable airmass and a major temperature inversion, which means there is a layer of warmer air above the city which is stopping the air from rising upward. That pollution is also not getting any help from the winds, with only very light gusts being reported in the Denver metro area.

An Action Day for Visibility is now in effect for the seven-county Denver-Boulder metropolitan area.

Indoor Burning Restrictions and requests to limit driving are now in effect until at least 4 p.m. Tuesday.

Poor visibility and an exceedance of the state visibility standard are expected on Tuesday. Otherwise, good or moderate air quality conditions are expected. No other air quality advisories are in effect.

As of 4 p.m. Monday, the Air Quality Index in the Denver metro was listed as moderate, with particulates less than 2.5 micrometers as the primary pollutant.

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