What is the air quality trend in Willimantic?

Over the past 8 days, Willimantic had an average AQI of 50 based on station measurements. The worst day was 2026-07-16 with AQI 81.

How is Willimantic air quality measured?

Air quality in Willimantic 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 Willimantic, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	41	24–60	10.2 µg/m³	7h	3
2026-07-21	36	18–62	8.8 µg/m³	24h	2
2026-07-20	28	10–77	7.3 µg/m³	24h	2
2026-07-19	43	20–109	11.8 µg/m³	24h	2
2026-07-18	54	24–103	15.6 µg/m³	23h	2
2026-07-17	68	20–207	24.5 µg/m³	24h	2
2026-07-16	81	35–176	30.3 µg/m³	23h	2
2026-07-15	53	37–95	14.1 µg/m³	17h	2

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