GRAND JUNCTION, Colo. (KKCO) - An inversion is not letting air out of the Grand Valley and could cause air quality to reach dangerous levels if it doesn't leave soon.
The inversion has been in place for nine days, causing the worst air quality the county has seen all winter.
If the inversion doesn't lift soon, the Mesa County Health Department may have to issue an advisory of moderate levels.
Officials at the Health Department say people sensitive to the air may need to be cautious. That category could include the elderly, young children, asthmatics, and those with lung diseases.
11 News will keep you posted if the Health Department issues an advisory.