Skip to main content


The air in Salt Lake City, Utah is often among the most polluted in the U.S.

Snow cover increases the chance of temperature inversions – when warm air acts like a lid, trapping pollutants near the surface, new research finds. https://go.nasa.gov/3xqvkOA
#NASAEarth
in reply to NASA

Little story: Drove down from Sun Valley (five hours) to spend night before flight next day. Washed all the road grime off my car before going to the airport. When I got back nine days later, hardly recognized my little orange Honda car. It was covered in grime from winter inversion. Went to car wash and washed the car again.

Lo, thar be cookies on this site to keep track of your login. By clicking 'okay', you are CONSENTING to this.