What is the air quality trend in Cerritos?

Over the past 15 days, Cerritos had an average AQI of 41 based on station measurements. The worst day was 2026-07-10 with AQI 58.

How is Cerritos air quality measured?

Air quality in Cerritos 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 Cerritos, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 3 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	21	10–25	5.1 µg/m³	2.2	5h	177
2026-07-21	35	26–54	8.5 µg/m³	5.0	24h	210
2026-07-20	48	41–55	11.6 µg/m³	8.0	24h	202
2026-07-19	53	40–197	16.8 µg/m³	8.5	24h	211
2026-07-18	41	35–43	9.8 µg/m³	6.3	24h	214
2026-07-17	45	36–54	10.9 µg/m³	9.7	24h	221
2026-07-16	40	33–46	9.6 µg/m³	6.3	24h	203
2026-07-15	39	33–44	9.3 µg/m³	6.2	24h	213
2026-07-14	39	33–53	9.3 µg/m³	6.9	24h	207
2026-07-13	44	34–50	10.6 µg/m³	8.5	24h	211
2026-07-12	41	30–46	9.8 µg/m³	8.6	24h	205
2026-07-11	50	32–61	12.7 µg/m³	10.7	24h	170
2026-07-10	58	43–68	15.6 µg/m³	15.5	24h	204
2026-07-09	42	26–55	10.3 µg/m³	9.1	24h	213
2026-07-08	30	11–37	7.3 µg/m³	5.0	19h	208

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