What is the air quality trend in San Leonardo?

Over the past 3 days, San Leonardo had an average AQI of 68 based on station measurements. The worst day was 2026-09-23 with AQI 74.

How is San Leonardo air quality measured?

Air quality in San Leonardo 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 Leonardo, Philippines

Name: San Leonardo 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 Leonardo, Philippines.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

46h

PM2.5 Station

46h · 1 station

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-23	74	59–85	23.2 µg/m³	9h	1
2026-09-22	65	42–93	19.1 µg/m³	24h	1
2026-09-21	65	52–76	18.7 µg/m³	13h	1

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