Metropolitan Baltimore
 
Data courtesy of:
 

AQI Forecast - http://files.airnowtech.org/airnow/today/forecast_aqi_20150706_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://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 - http://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 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)
63 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Air Quality Index (AQI)
84 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors.
AQI - Pollutant Details
Particles (PM2.5)
63 
Moderate
Ozone
41 
Good
Ozone
84 
Moderate
Particles (PM2.5)
61 
Moderate
Forecast Discussion: Tuesday will be a hot and humid day. Mostly sunny skies in the afternoon and light surface winds will allow ozone to rebound into the Moderate range, with the highest concentrations expected in the eastern part of the state. Particles will remain in the Moderate range in response to humid conditions and lingering wildfire smoke. Clouds, rain showers, and scattered thunderstorms ahead of an approaching cold front on Wednesday will return ozone to the Good range, while particles will linger in the low Moderate range. The front will stall in the vicinity of the Mason-Dixon Line on Thursday, promoting a mix of clouds and sun throughout the day, with continued Good ozone conditions and particles along the Good/Moderate threshold. - MDE/PSAQFO

Current Conditions
Air Quality Index (AQI)
observed at 15:00 EDT
45
Good
Health Message: None
AQI - Pollutant Details
Particles (PM2.5) 45 Good
Ozone 30 Good

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

E-Mail Notification
 
Visibility Camera
Baltimore, MD
 
Baltimore, MD

View Other Visibility Cameras