What is the air quality in Cambridge MA?

Cambridge MA, United States of America has an annual US AQI of 45 (Reasonable) and average PM2.5 of 8.6 µg/m³, ranking #463 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Cambridge MA?

April is typically the cleanest month (AQI 37) and July the most polluted (AQI 54).

Where does Cambridge MA's air quality data come from?

PM2.5: 1998–2024 (satellite). From satellite data, because no government monitor covers the city. Full sources are on the methodology page.

Cambridge MA, United States of America — Air Quality & Clean City Guide 2026

Cambridge MA Air Quality Data

Global rank	City	Continent	AQI	PM2.5
463	Cambridge MA, United States of America	North America	AQI 45	PM2.5 8.6 µg/m³