What is the air quality in New Haven CT?

New Haven CT, United States of America has an annual US AQI of 50 (Reasonable) and average PM2.5 of 10 µg/m³, ranking #767 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in New Haven CT?

October is typically the cleanest month (AQI 43) and July the most polluted (AQI 57).

Where does New Haven CT's air quality data come from?

PM2.5: 1998–2026 (monitors 1999–2026, satellite 1998; 2026 provisional (AirNow)). Measured by government monitoring stations. Full sources are on the methodology page.

New Haven CT, United States of America — Air Quality & Clean City Guide 2026

New Haven CT Air Quality Data

Global rank	City	Continent	AQI	PM2.5
767	New Haven CT, United States of America	North America	AQI 50	PM2.5 10 µg/m³