Delaware
 
Data and Forecasts courtesy of:
 

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AQI: Good (0 - 50) AQI: Good (0 - 50)
Air quality is considered satisfactory, and air pollution poses little or no risk.
AQI: Moderate (51 - 100) AQI: Moderate (51 - 100)
Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
AQI: Unhealthy for Sensitive Groups (101 - 150) AQI: Unhealthy for Sensitive Groups (101 - 150)
Although general public is not likely to be affected at this AQI range, people with lung disease, older adults and children are at a greater risk from exposure to ozone, whereas persons with heart and lung disease, older adults and children are at greater risk from the presence of particles in the air.
AQI: Unhealthy (151 - 200) AQI: Unhealthy (151 - 200)
Everyone may begin to experience health effects members of sensitive groups may experience more serious health effects.
 AQI:Very Unhealthy (201 - 300) AQI: Very Unhealthy (201 - 300)
Health alert: everyone may experience more serious health effects.
AQI: Hazardous(301 - 500) AQI: Hazardous (301 - 500)
Health warnings of emergency conditions. The entire population is more likely to be affected.
Action DayAction Day
 
Local Air Quality Resources
 
State Air Quality Resources
American Lung Association (ALA) of Delaware
Delaware AQM - Contacts List
Delaware Division of Air Quality
Delaware's Air Quality Monitoring
 
Data and Forecasts courtesy of:
Air Quality Forecast
Today's High Tomorrow's High
Air Quality Index (AQI)
33 
Good
Health Message: None
Air Quality Index (AQI)
52 
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
AQI - Pollutant Details
Particles (PM2.5)
33 
Good
Particles (PM2.5)
52 
Moderate
Forecast Discussion: It will be a chilly winter weekend for the State of Delaware. Saturday will be another cold and windy day, but not as breezy as it was on Friday. With a clean and dry air mass in place and continued northwesterly flow, Good air quality will persist. High pressure will briefly move overhead on Sunday, resulting in calm winds overnight that pick up lightly from the south in the afternoon. The flow aloft will turn southerly as well, bringing in warm air aloft that, along with overcast skies, will limit vertical mixing. In response to low mixing heights and light surface winds, particles will jump up into the Moderate range. The next storm system will impact the state on Monday. It will be much warmer than the weekend, in response to a warm front lifting through overnight, with periods of rain moving through during the day. There is a chance that a light wintery mix could develop overnight Sunday into Monday morning in northern Delaware, but the majority of the precipitation will fall as rain during the day on Monday. This precipitation, along with clean onshore flow aloft, will return particles to the Good range. **Extended Forecast: Tuesday will be partly sunny and not much cooler, despite the passage of a cold front late Monday. The next round of wintery air won’t arrive until the passage of a secondary cold front on Wednesday. Light westerly surface winds and somewhat limited vertical mixing will push particles to the Good/Moderate threshold. -Huff

Current Conditions
Air Quality Index (AQI)
observed at 22:00 EST
56
Moderate
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
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 20 Good
Particles (PM2.5) 56 Moderate

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