The highest AQ index in Delaware (as of 17:00 EDT) is currently the Wilmington Area area. Ozone (OZONE) is measuring at 40 (Good). This means air quality is satisfactory, and air pollution poses little or no risk.
Over the next few days, the highest Ozone (OZONE) will be in the Greater New Castle County area. It is forecasted to be Good, meaning air quality is satisfactory, and air pollution poses little or no risk.
Thursday, September 17: Partly to mostly sunny skies and highs in the mid-80s will aid ozone formation in Delaware. However, light to moderate south-southwesterly winds will aid pollutant dispersion. In addition, increasing afternoon clouds will limit ozone production. Therefore, AQI levels are anticipated to be high-Good for ozone and Good for PM2.5. Friday, a passing cold front will shift winds to northerly, dispersing pollutants and bringing clean air into Delaware. However, increasing sunshine will support ozone development in the afternoon. As a result, AQI levels are anticipated to remain high-Good for ozone and Good for PM2.5. Saturday, as surface high pressure passes to the north, northerly winds will gradually shift to easterly, dispersing pollutants and carrying a slightly cooler air mass into the state. These conditions are anticipated to lead to Good AQI levels for ozone and PM2.5.
| Range | 0 - 50 | 51 - 100 | 101 - 150 | 151 - 200 | 201 - 300 | 301 - 500 |
| Color | ||||||
| Category | Good | Moderate | Unhealthy for Sensitive Groups | Unhealthy | Very Unhealthy | Hazardous |
Last Updated 5 minutes ago
Below is a list of counties in Delaware. Click on any county below and you'll get a list of cities where we provide AQ index forecasts.
| Kent | New Castle | Sussex |