The St. Louis Visual Air Pollution camera is located atop SSM St. Mary’s Hospital, located at 6420 Clayton Road in St. Louis, Missouri. The Missouri Department of Natural Resources thanks St. Mary’s for its active support of this public service project to improve our region’s air quality and overall health.
Visibility Examples
High pollution example:
1-hour Ozone max .101 PPM
Other St. Louis Web Cameras
General Information
Though visual air pollution is not a direct measure of the level of air quality, it can give the viewer a clue to the healthfulness of ambient air. Many of the air pollutants that contribute to the formation of the harmful, but invisible, ozone also impact clarity of the air.
Smog, a grayish red haze, forms in the air during hot summer days. Smog forms when nitrogen dioxide, hydrocarbons from gasoline vapors, automobile exhaust, small dust particles, carbon particles and other industrial pollutants mix in stagnant air. Smog reduces visibility and because of its chemical activity often produces ozone in unhealthful concentrations. For more information about ozone and its health effects, visit Ozone Air Pollutant and Sources.
- Pollen and Spore Counts - American Academy of Allergy Asthma and Immunology
- Air quality in St. Louis - IQAir
- AirNow - U.S. Environmental Protection Agency's partnership