What is the air quality trend in San Pedro?

Over the past 7 days, San Pedro had an average AQI of 25 based on station measurements. The worst day was 2026-10-20 with AQI 33.

How is San Pedro air quality measured?

Air quality in San Pedro 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 Pedro, United States

Name: San Pedro 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 Pedro, United States.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 164 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-20	33	19–43	7.8 µg/m³	5.2	24h	146
2026-10-19	28	21–35	6.7 µg/m³	4.3	24h	167
2026-10-18	24	20–31	5.8 µg/m³	3.7	24h	154
2026-10-17	23	16–29	5.6 µg/m³	3.8	24h	165
2026-10-16	24	15–37	5.7 µg/m³	3.8	24h	158
2026-10-15	25	17–34	6.0 µg/m³	4.2	24h	165
2026-10-14	24	19–27	5.8 µg/m³	3.5	21h	166

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