What is the air quality trend in Hamden?

Over the past 8 days, Hamden had an average AQI of 52 based on station measurements. The worst day was 2026-07-16 with AQI 75.

How is Hamden air quality measured?

Air quality in Hamden 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 Hamden, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

143h

PM2.5 Station

143h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	16	8–23	3.8 µg/m³	2h	2
2026-07-21	52	10–74	13.7 µg/m³	17h	2
2026-07-20	38	15–86	10.2 µg/m³	21h	2
2026-07-19	55	15–143	16.3 µg/m³	20h	2
2026-07-18	67	12–151	20.5 µg/m³	19h	2
2026-07-17	67	13–189	24.7 µg/m³	21h	2
2026-07-16	75	9–158	26.1 µg/m³	23h	2
2026-07-15	48	8–114	13.7 µg/m³	20h	2

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