What is the air quality trend in Amherst?

Over the past 8 days, Amherst had an average AQI of 20 based on station measurements. The worst day was 2026-05-27 with AQI 25.

How is Amherst air quality measured?

Air quality in Amherst is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Amherst, United States

Name: Amherst Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Amherst, United States.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	19	11–25	4.6 µg/m³	5h	3
2026-05-29	19	11–38	4.5 µg/m³	24h	2
2026-05-28	19	9–31	4.6 µg/m³	24h	2
2026-05-27	25	17–52	6.1 µg/m³	24h	2
2026-05-26	21	14–40	5.0 µg/m³	24h	2
2026-05-25	19	9–51	4.5 µg/m³	24h	2
2026-05-24	20	9–56	4.7 µg/m³	24h	2
2026-05-23	20	14–30	4.7 µg/m³	16h	2

Back to Amherst Air Quality