What is the air quality trend in Barrington?

Over the past 14 days, Barrington had an average AQI of 50 based on station measurements. The worst day was 2026-07-17 with AQI 125.

How is Barrington air quality measured?

Air quality in Barrington 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 Barrington, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

329h

PM2.5 Station

329h · 4 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	46	17–68	11.9 µg/m³	21h	4
2026-07-20	57	31–84	15.8 µg/m³	22h	4
2026-07-19	73	18–436	33.6 µg/m³	24h	4
2026-07-18	68	24–142	20.9 µg/m³	23h	5
2026-07-17	125	28–193	55.0 µg/m³	24h	5
2026-07-16	58	30–161	17.9 µg/m³	24h	5
2026-07-15	41	27–84	10.1 µg/m³	24h	5
2026-07-14	36	23–51	8.5 µg/m³	24h	5
2026-07-13	30	20–46	7.1 µg/m³	24h	5
2026-07-12	32	19–52	7.8 µg/m³	24h	4
2026-07-11	34	23–44	8.1 µg/m³	24h	5
2026-07-10	31	12–49	7.3 µg/m³	24h	5
2026-07-09	34	18–47	8.1 µg/m³	24h	4
2026-07-08	40	20–221	14.8 µg/m³	23h	5

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