The highest AQ index in Delaware (as of 7:00 EDT) is currently the Sussex County area. Ozone (OZONE) is measuring at 45 (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 Moderate, meaning air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.
Saturday, May 9: As a warm front traverses Delaware, increasing clouds and rain showers will inhibit ozone formation, and periods of moderate south-southwesterly winds will keep pollutants well dispersed. As a result, Good AQI levels are anticipated for ozone and PM2.5. Sunday, increasing sunshine and temperatures warming into the upper-70s will aid ozone development. Additionally, lighter southwesterly winds through the morning and midday hours will gradually carry regional pollutants into the state. However, increasing clouds and showers in the afternoon will limit ozone production. As a result, AQI levels are anticipated to be low-Moderate for ozone and high-Good for PM2.5. Monday, as a cold front moves southward through Delaware, cloud cover and rain showers will inhibition ozone formation. Furthermore, moderate northerly winds will effectively disperse pollutants and bring clean, cool air into the state. As a result, Good AQI levels are anticipated 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 |
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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 |