Metropolitan Baltimore
 
Data courtesy of:
 

AQI Forecast - http://files.airnowtech.org/airnow/today/forecast_aqi_20150801_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)

AirNow.gov is undergoing maintenance. Updates for the forecasts and current conditions are not available between midnight and 4 am EST.

Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
53 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
Data Not Available
AQI - Pollutant Details
Particles (PM2.5)
53 
Moderate
Ozone
50 
Good
Data Not Available
Forecast Discussion: Saturday will be warm, with sustained surface winds prevailing from the west throughout the day. A weak cold front moving through Maryland will place an area of converging surface winds near the I-95 Corridor, promoting areas of Moderate ozone and particles near the interstate. Sunday’s ozone concentrations will continue to rise into the low Moderate range as full sun and light winds prevail for another day. Ozone formation will be limited to this range due to lower weekend emissions and surface winds shifting onshore. Particles will reach the low Moderate range due to morning stagnation. An approaching cold front on Monday will bring increasing clouds and scattered showers to Maryland, limiting ozone to the Good/Moderate threshold. Southerly surface winds and increasing humidity ahead of the front will keep particles in the Moderate range. - MDE/PSAQFO

Current Conditions
Data Not Available

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