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Maryland State Government Maryland Department of the Environment

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:

High pressure quickly takes control on Saturday creating inverted conditions and increasing fine particle concentrations to the low-end Moderate range. An approaching warm front Sunday will further trap fine particles close to the surface until the front passes, likely creating fog and widespread Moderate air quality, especially along the I-95 corridor. The passage of the warm front and associated rain on Monday will reduce fine particle concentrations back to the Good range. Then a cold front on Tuesday will promote Good air quality through Wednesday. - MDE

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