What is the air quality trend in Berkeley?

Over the past 14 days, Berkeley had an average AQI of 22 based on station measurements. The worst day was with AQI .

How is Berkeley air quality measured?

Air quality in Berkeley 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 Berkeley, United States

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

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

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

Air Quality Index Trend

257h

PM2.5 Trend

257h · 1 station

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-12	13	10–15	3.0 µg/m³	1.3	22h	99
2026-04-11	11	10–12	2.7 µg/m³	—	24h	101
2026-04-10	12	12–14	3.0 µg/m³	—	24h	102
2026-04-09	17	14–18	4.0 µg/m³	—	16h	102
2026-04-08	25	13–44	6.0 µg/m³	2.8	10h	82
2026-04-07	24	21–27	5.7 µg/m³	1.8	24h	102
2026-04-06	26	20–32	6.3 µg/m³	—	18h	101
2026-04-04	20	16–23	4.7 µg/m³	—	14h	101
2026-04-03	18	15–21	4.4 µg/m³	—	24h	101
2026-04-02	16	5–19	3.8 µg/m³	1.2	22h	97
2026-04-01	27	20–31	6.5 µg/m³	6.3	23h	94
2026-03-31	33	23–37	7.9 µg/m³	7.3	23h	94
2026-03-30	37	23–42	9.0 µg/m³	5.7	11h	94
2026-03-29	39	38–40	9.4 µg/m³	4.9	2h	104

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