What is the air quality trend in San Clemente?

Over the past 15 days, San Clemente had an average AQI of 75 based on station measurements. The worst day was 2026-07-08 with AQI 200.

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
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

315h

PM2.5 Station

315h · 1 station

Temperature GFS model

55pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	7	4–13	1.6 µg/m³	5h	1
2026-07-21	43	4–226	26.1 µg/m³	15h	1
2026-07-20	69	4–256	29.4 µg/m³	24h	1
2026-07-19	32	4–169	11.3 µg/m³	24h	1
2026-07-18	13	4–46	3.1 µg/m³	19h	1
2026-07-17	8	4–25	2.0 µg/m³	20h	1
2026-07-16	25	4–89	7.0 µg/m³	24h	1
2026-07-15	55	21–91	15.5 µg/m³	24h	1
2026-07-14	113	42–321	59.4 µg/m³	24h	1
2026-07-13	140	59–272	68.1 µg/m³	24h	1
2026-07-12	115	70–172	43.2 µg/m³	24h	1
2026-07-11	94	42–181	38.5 µg/m³	24h	1
2026-07-10	77	21–193	29.4 µg/m³	24h	1
2026-07-09	137	74–186	60.4 µg/m³	24h	1
2026-07-08	200	87–295	133.2 µg/m³	16h	1

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