What is the air quality trend in Cerritos?

Over the past 8 days, Cerritos had an average AQI of 39 based on station measurements. The worst day was 2026-07-19 with AQI 52.

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

169h

PM2.5 Station

169h · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	22	14–25	5.2 µg/m³	2.9	8h	191
2026-07-21	34	26–39	8.2 µg/m³	5.2	24h	209
2026-07-20	47	23–54	11.4 µg/m³	8.0	24h	201
2026-07-19	52	40–187	16.0 µg/m³	8.5	24h	210
2026-07-18	40	30–43	9.7 µg/m³	6.3	24h	212
2026-07-17	45	35–54	10.9 µg/m³	9.7	24h	219
2026-07-16	40	32–44	9.5 µg/m³	6.3	24h	201
2026-07-15	39	1–47	9.4 µg/m³	6.4	17h	193

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