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Maryland State Government Maryland Department of the Environment

Current Air Quality Conditions

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Clean Air Partners
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Ambient Air Monitoring Program

The Ambient Air Monitoring Program measures ground-level concentrations of criteria pollutants and air toxics, along with surface and aloft meteorological parameters. The Program also performs quality control, quality assurance, and analysis of the pollutant concentrations that are measured at each of the air monitoring stations located throughout Maryland. It is responsible for Air Quality Index (AQI) reporting and issuing daily air quality forecasts as well as coordination of 3D air-shed photochemical grid and dispersion modeling.

In addition, the Program collaborates with local universities to conduct special atmospheric monitoring research to better characterize aloft and surface atmospheric pollutant concentrations. These research initiatives support air quality planning and regulations development.

Learn More:

To report an environmental emergency, see Emergency Numbers.

Air Quality Forecast Discussion:

Air quality will be in the Moderate range Friday, particularly during the early morning hours and in western mountain valleys, ahead of an approaching cold front. A few thunderstorms are also possible Friday evening. Behind the cold front on Saturday cooler temperatures and initially brisk winds returns Good air quality to Maryland. Good air quality will persist through Sunday. - MDE

If you have any questions, please contact Janice Lafon at 410-537-3280 or e-mail at so that she may direct your inquiry.