What is the air quality in Amherst MA?

Amherst MA, United States of America has an annual US AQI of 45 (Reasonable) and average PM2.5 of 8.5 µg/m³, ranking #457 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Amherst MA?

October is typically the cleanest month (AQI 37) and July the most polluted (AQI 53).

Where does Amherst 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.

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

Amherst MA Air Quality Data

Global rank	City	Continent	AQI	PM2.5
457	Amherst MA, United States of America	North America	AQI 45	PM2.5 8.5 µg/m³