What is the air quality trend in Santo Tomas?

Over the past 21 days, Santo Tomas had an average AQI of 54 based on station measurements. The worst day was 2026-07-06 with AQI 89.

How is Santo Tomas air quality measured?

Air quality in Santo Tomas 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 Santo Tomas, Philippines

Name: Santo Tomas Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Santo Tomas, Philippines.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

440h

PM2.5 Station

440h · 13 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	76	69–85	24.1 µg/m³	7h	13
2026-07-21	76	60–86	24.0 µg/m³	23h	13
2026-07-20	59	40–77	16.3 µg/m³	22h	13
2026-07-19	41	30–56	9.9 µg/m³	23h	13
2026-07-18	44	33–59	10.6 µg/m³	23h	13
2026-07-17	53	40–64	13.4 µg/m³	24h	13
2026-07-16	54	45–68	14.0 µg/m³	22h	13
2026-07-15	67	56–90	19.7 µg/m³	23h	13
2026-07-14	74	59–98	23.2 µg/m³	23h	13
2026-07-13	52	20–70	14.1 µg/m³	23h	13
2026-07-12	40	21–68	10.0 µg/m³	22h	13
2026-07-11	26	14–41	6.1 µg/m³	18h	13
2026-07-10	27	9–40	6.4 µg/m³	22h	13
2026-07-09	31	20–37	7.4 µg/m³	23h	13
2026-07-08	46	22–68	11.8 µg/m³	24h	13
2026-07-07	76	53–110	24.0 µg/m³	24h	13
2026-07-06	89	60–105	30.3 µg/m³	12h	13
2026-07-05	49	23–66	12.6 µg/m³	24h	13
2026-07-04	47	28–67	12.2 µg/m³	24h	13
2026-07-03	58	43–66	15.5 µg/m³	24h	13
2026-07-02	56	52–64	14.7 µg/m³	10h	13

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