What is the air quality trend in San Clemente?

Over the past 20 days, San Clemente had an average AQI of 63 based on station measurements. The worst day was 2026-05-20 with AQI 82.

How is San Clemente air quality measured?

Air quality in San Clemente 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 Clemente, Chile

Name: San Clemente 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 Clemente, Chile.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

437h

PM2.5 Station

437h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	63	10–153	20.0 µg/m³	19h	2
2026-05-28	49	5–87	13.6 µg/m³	23h	3
2026-05-27	60	14–171	19.4 µg/m³	19h	2
2026-05-26	77	14–280	32.4 µg/m³	23h	2
2026-05-25	65	25–166	21.3 µg/m³	20h	3
2026-05-24	64	15–173	22.0 µg/m³	22h	2
2026-05-23	72	18–134	22.6 µg/m³	23h	3
2026-05-22	72	11–192	25.7 µg/m³	24h	2
2026-05-21	61	25–178	20.5 µg/m³	20h	2
2026-05-20	82	15–176	29.4 µg/m³	22h	2
2026-05-19	68	10–167	23.7 µg/m³	21h	2
2026-05-18	44	2–117	12.3 µg/m³	23h	2
2026-05-17	77	11–413	39.6 µg/m³	21h	2
2026-05-16	54	11–149	17.1 µg/m³	20h	2
2026-05-15	56	14–195	20.1 µg/m³	22h	3
2026-05-14	69	22–172	23.4 µg/m³	23h	2
2026-05-13	72	25–138	22.9 µg/m³	23h	3
2026-05-12	67	6–156	21.0 µg/m³	23h	3
2026-05-11	57	10–171	18.6 µg/m³	22h	3
2026-05-10	46	13–117	13.5 µg/m³	24h	3

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