Western Maryland
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20150305_maryland.jpg
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
 - http://www.epa.gov/airnow/today/cur_aqi_maryland.jpg
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
AQI Animation - http://www.epa.gov/airnow/today/anim_aqi_maryland.gif
 
Legend: National Parks/Monuments National Parks/Monuments     Legend: Tribal Boundaries Tribal Boundaries
The tribal boundaries shown here are provided by the Bureau of Indian Affairs and are intended to be used as a general spatial reference only. They are not a formal determination of tribal boundaries by the EPA.
 
AQI: Good (0 - 50) AQI: Moderate (51 - 100) AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy (151 - 200) AQI: Very Unhealthy (201 - 300) AQI: Hazardous(301 - 500) Action DayAction Day
 
Local Air Quality Resources
Action Day Program
 
State Air Quality Resources
American Lung Association (ALA) of Maryland
Clean Air Partners
MDE - Contacts US
MDE - Air and Health Information Center
Maryland Department of the Environment (MDE)
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
46 
Good
Health Message: None
Air Quality Index (AQI)
61 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
46 
Good
Particles (PM2.5)
61 
Moderate
Forecast Discussion: Copious snowfall along a slow moving cold front Thursday will decrease particle concentrations to the Good range for most areas, and near the Good/Moderate threshold for the major metropolitan areas. On Friday, a fresh snow pack will foster weak atmospheric mixing, particularly in western valleys, causing a rise in particle concentrations and Moderate air quality for most of the state. High pressure takes hold for the weekend, and though initially a clean airmass, reduced mixing and additional moisture due to snowmelt along with local pollution will quickly modify the air quality and keep Moderate air quality for Saturday through Monday. Saturday and Sunday will need to be monitored for fine particle concentrations perhaps reaching the upper Moderate range. - MDE

Current Conditions
Air Quality Index (AQI)
observed at 22:00 EST
45
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 45 Good
Ozone 25 Good

Past Air Quality Maps and Data
Yesterday's Maps and Data
Air Quality Maps Archives (by region)

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