Delaware
 
Data courtesy of:
 

AQI Forecast - http://www.epa.gov/airnow/today/forecast_aqi_20150522_va_wv_md_de_dc.jpg
 
Legend: National Parks/Monuments National Parks/Monuments
 - http://www.epa.gov/airnow/today/cur_aqi_va_wv_md_de_dc.jpg
 
Legend: National Parks/Monuments National Parks/Monuments
AQI Animation - http://www.epa.gov/airnow/today/anim_aqi_va_wv_md_de_dc.gif
 
Legend: National Parks/Monuments National Parks/Monuments
 
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
 
State Air Quality Resources
Air Quality Partnership of the Delaware Valley
American Lung Association (ALA) of Delaware
Delaware AQM - Contacts List
Delaware Division of Air Quality
Delaware's Air Quality Monitoring
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
49 
Good
Health Message: None
Air Quality Index (AQI)
47 
Good
Health Message: None
AQI - Pollutant Details
Ozone
49 
Good
Particles (PM2.5)
38 
Good
Ozone
47 
Good
Particles (PM2.5)
29 
Good
Forecast Discussion: The sun will return on Friday for a pleasant late Spring day, with low humidity and breezy northwesterly winds. A north-to-south moving “back door” cold front will move through Delaware in the late afternoon and early evening, brining an increase in cloud cover and the chance for an isolated rain shower. Strong late May sun will allow ozone to rebound from Thursday’s very low levels, but ample atmospheric ventilation will keep concentrations in the upper Good range. Particles are low regionally and upwind, and with a relatively dry air mass in place, Good conditions will continue on Friday. **Extended Forecast: It will be cool start to the Memorial Day weekend on Saturday as a Canadian air mass builds into the Mid-Atlantic region behind Friday’s cold front. Below average temperatures and low atmospheric humidity will allow Good air quality to continue. A warming trend will begin on Sunday. Ozone will reach into the Moderate range, while particles will be slower to respond and remain in the upper Good range. -Huff

Current Conditions
Air Quality Index (AQI)
observed at 5:00 EDT
55
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5) 55 Moderate
Ozone 15 Good

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