What is the air quality trend in Brentwood?

Over the past 8 days, Brentwood had an average AQI of 46 based on station measurements. The worst day was 2026-07-16 with AQI 74.

How is Brentwood air quality measured?

Air quality in Brentwood 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 Brentwood, United States

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

164h

PM2.5 Station

164h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	45	23–70	11.6 µg/m³	22h	2
2026-07-20	39	21–99	10.4 µg/m³	24h	2
2026-07-19	43	24–117	11.3 µg/m³	24h	3
2026-07-18	51	19–140	15.0 µg/m³	23h	3
2026-07-17	64	21–181	22.8 µg/m³	24h	3
2026-07-16	74	28–225	27.6 µg/m³	23h	3
2026-07-15	43	19–89	11.6 µg/m³	23h	3
2026-07-14	14	14–14	3.4 µg/m³	1h	3

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