What is the air quality trend in San Fernando?

Over the past 15 days, San Fernando had an average AQI of 37 based on station measurements. The worst day was 2026-07-10 with AQI 62.

How is San Fernando air quality measured?

Air quality in San Fernando 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 San Fernando, United States

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

335h

PM2.5 Station

335h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	24	12–38	5.8 µg/m³	23h	1
2026-07-20	43	25–68	10.8 µg/m³	24h	1
2026-07-19	41	21–61	10.2 µg/m³	24h	1
2026-07-18	39	21–55	9.3 µg/m³	24h	1
2026-07-17	41	21–57	10.0 µg/m³	24h	1
2026-07-16	31	17–61	7.6 µg/m³	24h	1
2026-07-15	33	17–50	7.9 µg/m³	24h	1
2026-07-14	33	17–61	8.1 µg/m³	24h	1
2026-07-13	45	25–63	11.1 µg/m³	24h	1
2026-07-12	37	17–61	9.1 µg/m³	24h	1
2026-07-11	56	21–105	15.9 µg/m³	24h	1
2026-07-10	62	21–137	18.7 µg/m³	24h	1
2026-07-09	33	17–57	8.0 µg/m³	24h	1
2026-07-08	29	21–42	6.8 µg/m³	23h	1
2026-07-07	21	21–21	5.0 µg/m³	1h	1

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