What is the air quality in Dover DE?

Dover DE, United States of America has an annual US AQI of 50 (Reasonable) and average PM2.5 of 9.6 µg/m³, ranking #730 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Dover DE?

October is typically the cleanest month (AQI 41) and July the most polluted (AQI 66).

Where does Dover DE's air quality data come from?

PM2.5: 1998–2025 (monitors 1999–2025, satellite 1998–1999, 2003, 2005, 2008–2012, 2015–2022, 2024). Measured by government monitoring stations. Full sources are on the methodology page.

Dover DE, United States of America — Air Quality & Clean City Guide 2026

Dover DE Air Quality Data

Global rank	City	Continent	AQI	PM2.5
730	Dover DE, United States of America	North America	AQI 50	PM2.5 9.6 µg/m³