What is the air quality in San Ildefonso?

San Ildefonso, Philippines has an annual US AQI of 68 (Polluted) and average PM2.5 of 18.2 µg/m³, ranking #3041 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in San Ildefonso?

August is typically the cleanest month (AQI 63) and March the most polluted (AQI 73).

Where does San Ildefonso's air quality data come from?

PM2.5: 1998–2024 (satellite). From satellite data, because no government monitor covers the city. Full sources are on the methodology page.

San Ildefonso, Philippines — Air Quality & Clean City Guide 2026

San Ildefonso Air Quality Data

Global rank	City	Continent	AQI	PM2.5
3041	San Ildefonso, Philippines	Asia	AQI 68	PM2.5 18.2 µg/m³