Western Maryland
 
Data courtesy of:
 

AQI Forecast - https://files.airnowtech.org/airnow/today/forecast_aqi_20160825_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.
 - https://files.airnowtech.org/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 - https://files.airnowtech.org/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 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)
50 
Good
Health Message: None
AQI - Pollutant Details
Ozone
41 
Good
Particles (PM2.5)
46 
Good
Ozone
50 
Good
Particles (PM2.5)
42 
Good
Forecast Discussion: On Friday, a weak cold front will slide through the state. While temperatures actually increase in to the 90s despite the front’s passage, winds become northwesterly and humidity decreases noticeably through the day. With the increase in temperatures, ozone concentrations will again rise well in to the Moderate range with northwest winds pushing the greatest pollution concentrations to southern areas of the state. Vertical mixing of drier, cleaner air should help to limit ozone from rising in to the USG range, but areas of the state south of the Bay Bridge should monitor conditions Friday. Winds switch to the northeast on Saturday. With temperatures persisting in the 90s, the reverse I-95 corridor winds will support continued high-end Moderate ozone AQI conditions, despite lower weekend emissions. Temperatures remain near 90F on Sunday, but with flow off the ocean and continued lower weekend emissions, the setup will be less supportive of ozone leading to low to mid-Moderate ozone air quality. -MDE

Current Conditions
Air Quality Index (AQI)
observed at 15:00 EDT
41
Good
Health Message: None
Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the Hazardous category. Additional information on reducing exposure to extremely high levels of particle pollution is available here.
AQI - Pollutant Details
Ozone 41 Good
Particles (PM2.5) 39 Good

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

E-Mail Notification