Missouri operates approximately 50 air monitoring sites across the state. The monitors measure pollutants and collect data to determine whether Missouri meets federal and state air quality standards, report daily air quality and track trends in air pollution levels over time. Select an air monitoring site to learn more about each pollutant monitored and the data results for each site.
- Air Monitoring Sites in Jefferson County
- Air Monitoring Sites in Southeast Missouri
- Air Monitoring Sites - GIS Map
To sort the table by field, click on the County or Station column headings in the table.
| County | Station | Pollutants Monitored |
|---|---|---|
| St. Francois | St. Joe State Park Air Monitoring Site | Lead |
| St. Louis | Ladue Air Monitoring Site | Particulate Matter |
| St. Louis | Maryland Heights Air Monitoring Site | Ozone |
| St. Louis | Pacific Air Monitoring Site | Ozone |
| St. Louis | Rider Trail I-70, Near Road, Air Monitoring Site | Nitrogen Dioxide, Sulfur Dioxide |
| Ste. Genevieve | Bonne Terre Air Monitoring Site | Ozone |
| Stoddard | Mingo Refuge Air Monitoring Site | Particulate Matter |
| Taney | Hercules Glades Air Monitoring Site | Particulate Matter |
| St. Louis (city) | Blair Street, NCore Site, St. Louis City Air Monitoring Site | Carbon Monoxide, Nitrogen Dioxide, Ozone, Particulate Matter, Sulfur Dioxide |
| St. Louis (city) | Branch Street Air Monitoring Site | Particulate Matter |