What is the air quality trend in Stevenson Ranch?

Over the past 3 days, Stevenson Ranch had an average AQI of 33 based on station measurements. The worst day was 2026-09-03 with AQI 34.

How is Stevenson Ranch air quality measured?

Air quality in Stevenson Ranch 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 Stevenson Ranch, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

46h

PM2.5 Station

46h · 1 station

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	34	17–53	8.2 µg/m³	18h	1
2026-09-04	33	21–59	8.1 µg/m³	24h	1
2026-09-03	34	25–42	8.0 µg/m³	4h	1

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