What is the air quality trend in San Clemente?

Over the past 8 days, San Clemente had an average AQI of 58 based on station measurements. The worst day was 2026-05-26 with AQI 77.

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

157h

PM2.5 Station

157h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	59	22–114	17.4 µg/m³	20h	2
2026-05-28	51	20–103	14.1 µg/m³	22h	3
2026-05-27	56	7–156	17.0 µg/m³	22h	2
2026-05-26	77	21–374	34.1 µg/m³	23h	3
2026-05-25	63	14–164	21.1 µg/m³	22h	3
2026-05-24	67	15–173	22.5 µg/m³	23h	3
2026-05-23	61	15–147	18.7 µg/m³	24h	3
2026-05-22	36	36–36	8.7 µg/m³	1h	3

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