What is the air quality in Concord NH?

Concord NH, United States of America has an annual US AQI of 42 (Reasonable) and average PM2.5 of 7.4 µg/m³, ranking #317 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Concord NH?

October is typically the cleanest month (AQI 32) and July the most polluted (AQI 50).

Where does Concord NH's air quality data come from?

PM2.5: 1998–2024 (monitors 1999–2003, satellite 1998–2002, 2004–2024). Measured by government monitoring stations. Full sources are on the methodology page.

Concord NH, United States of America — Air Quality & Clean City Guide 2026

Concord NH Air Quality Data

Global rank	City	Continent	AQI	PM2.5
317	Concord NH, United States of America	North America	AQI 42	PM2.5 7.4 µg/m³