What is the air quality trend in Berwyn?

Over the past 8 days, Berwyn had an average AQI of 37 based on station measurements. The worst day was 2026-05-24 with AQI 52.

How is Berwyn air quality measured?

Air quality in Berwyn 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 Berwyn, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-30	43	33–57	10.6 µg/m³	5.2	5h	170
2026-05-29	25	18–32	6.1 µg/m³	1.4	24h	281
2026-05-28	27	21–40	6.6 µg/m³	2.3	24h	258
2026-05-27	43	30–58	10.6 µg/m³	10.2	24h	280
2026-05-26	33	26–43	7.9 µg/m³	3.8	24h	281
2026-05-25	48	31–71	12.9 µg/m³	10.3	24h	282
2026-05-24	52	38–59	12.9 µg/m³	1.7	24h	281
2026-05-23	29	21–37	6.9 µg/m³	1.2	19h	279

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