The highest AQ index in Delaware (as of 15:00 EDT) is currently the Wilmington Area area. Ozone (OZONE) is measuring at 48 (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.
Thursday, July 9: Scattered showers and thunderstorms will aid atmospheric mixing and reduce ozone development as a weak trough of low pressure aloft interacts with a moist and unstable air mass over the Mid-Atlantic. Furthermore, periods of moderate southerly to south-southwesterly surface winds will aid dispersion. As a result, AQI levels are anticipated to be Good for ozone and PM2.5. Friday, warming temperatures and partly sunny skies throughout much of the day will increase ozone development. In addition, periods of light westerly to west-southwesterly winds will limit dispersion and carry regional pollutants into the First State. Therefore, AQI levels are anticipated to be low-Moderate for ozone and PM2.5. Saturday, mixing will increase as a cold front traverses the region. Additionally, partly cloudy skies and scattered showers will limit ozone production. Thus, AQI levels are anticipated to be high-Good 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 |