What is the air quality trend in New Haven?

Over the past 8 days, New Haven had an average AQI of 61 based on station measurements. The worst day was 2026-07-17 with AQI 103.

How is New Haven air quality measured?

Air quality in New Haven 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 New Haven, United States

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

147h

PM2.5 Station

147h · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	42	29–54	10.3 µg/m³	2h	3
2026-07-21	50	24–74	13.2 µg/m³	19h	2
2026-07-20	57	20–137	16.8 µg/m³	17h	2
2026-07-19	65	17–154	20.3 µg/m³	20h	3
2026-07-18	60	22–154	18.4 µg/m³	19h	3
2026-07-17	103	46–276	44.7 µg/m³	24h	3
2026-07-16	75	5–207	31.7 µg/m³	24h	3
2026-07-15	43	15–69	10.9 µg/m³	22h	3

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