Iloilo vs Santo Tomas AQI Comparison

Side-by-side OpenAQ-derived air quality comparison for Iloilo and Santo Tomas. Values use mapped daily PM2.5 and PM10 observations normalized to US EPA AQI.

Lower average AQI: Iloilo (147-pt gap)PM2.5: Iloilo 21.0 ug/m3 · Santo Tomas 143.4 ug/m3

Source: OpenAQ local exports mapped to AQI Now cities; city summaries cover 2024-06-05–2024-12-31 and 2024-04-26–2024-12-31.

Compare two cities

City A

City B

Iloilo vs Santo Tomas

Iloilo

Iloilo, Philippines

PM2.5: 21.0 ug/m3
PM10: 23.2 ug/m3
Worst month: November
Trend: n/a

EPA category: Moderate

Santo Tomas

Pampanga, Philippines

220

PM2.5: 143.4 ug/m3
PM10: n/a ug/m3
Worst month: December
Trend: n/a

EPA category: Very Unhealthy

Lower average AQI in this selected period: Iloilo. Values are historical OpenAQ-derived city summaries, not live readings.

Yearly EPA AQI trend

Seasonal EPA AQI heatmap

JanFebMarAprMayJunJulAugSepOctNovDec

Iloilo

Santo Tomas

248

243

220

201

198

188

210

235

262

What this comparison measures

Average EPA AQI — city-level daily AQI values averaged across the OpenAQ coverage window.
PM2.5 and PM10 — mapped monitor concentrations aggregated to daily city averages.
Seasonality — worst and cleanest months from the monthly city rollups.
Trend — difference between the earliest and latest yearly AQI average in this build.