The top photo was taken by MCHD Air Quality cameras on July 20 and the bottom photo was taken Aug. 20, showing just how much smoke is affecting the Grand Valley.
The Mesa County Health Department has
issued a No Open Burning Air Watch Alert for Mesa County, including
agricultural burns, on Wednesday, Aug. 19. Residents will be notified when the
burn restriction is lifted.
Smoke from wildfires in California and northwestern states is visible in the Grand Valley. The smoke is causing an increase in pollution concentration, which can cause respiratory symptoms such as shortness of breath, coughing and sore throat.
Unusually sensitive groups, those with asthma and respiratory infections, should avoid or limit prolonged or heavy exertion. 
Residents can help reduce pollution by limiting vehicle use. Carpooling, walking or using public transportation can help cut down on pollution concentrations.
Mesa County Health Department officials will notify residents when the burn restriction is lifted.
Visit for information on current air conditions.