What is the air quality trend in San Martín?

Over the past 3 days, San Martín had an average AQI of 73 based on station measurements. The worst day was 2026-06-04 with AQI 88.

How is San Martín air quality measured?

Air quality in San Martín 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 Martín, El Salvador

Name: San Martín 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 Martín, El Salvador.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

28h

PM2.5 Station

28h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-06-05	83	67–121	27.1 µg/m³	29.8	17h	1
2026-06-04	88	64–158	30.4 µg/m³	34.2	9h	1
2026-06-03	49	46–52	11.8 µg/m³	11.8	2h	1

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