Metropolitan Baltimore
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20140416_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 | Greater Baltimore Asthma Alliance
 
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)
36 
Good
Health Message: None
Air Quality Index (AQI)
44 
Good
Health Message: None
AQI - Pollutant Details
Ozone
36 
Good
Particles (PM2.5)
21 
Good
Ozone
44 
Good
Particles (PM2.5)
33 
Good
Forecast Discussion: Some high clouds will pass at times but fair skies dominate Thursday under high pressure. Ozone will increase only modestly with well below normal temperatures in place. Good air quality is expected. Clouds are on the increase Friday limiting ozone production. Most areas will have Good air quality with easterly winds, though areas west of I-95 may see fine particles flirt with the low Moderate range as the state will be under an inversion. Skies clear again on Saturday as a weak cool front pushes through ushering in light northerly winds and Good air quality. - MDE

Current Conditions
Air Quality Index (AQI)
observed at 20:00 EDT
35
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 35 Good
Ozone 34 Good

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

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