What is the air quality trend in Bulacan?

Over the past 15 days, Bulacan had an average AQI of 40 based on station measurements. The worst day was 2026-07-21 with AQI 61.

How is Bulacan air quality measured?

Air quality in Bulacan 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 Bulacan, Philippines

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

325h

PM2.5 Station

325h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	54	27–89	15.2 µg/m³	23.9	13h	1
2026-07-21	61	32–78	17.4 µg/m³	29.4	24h	1
2026-07-20	40	17–69	10.0 µg/m³	19.7	24h	1
2026-07-19	49	13–152	14.5 µg/m³	27.0	24h	1
2026-07-18	28	18–78	7.1 µg/m³	13.4	24h	1
2026-07-17	36	16–69	9.0 µg/m³	16.3	24h	1
2026-07-16	40	17–76	10.7 µg/m³	19.4	24h	1
2026-07-15	43	19–68	11.2 µg/m³	19.3	24h	1
2026-07-14	60	33–95	17.3 µg/m³	29.9	23h	1
2026-07-13	53	15–285	20.7 µg/m³	33.9	24h	1
2026-07-12	31	13–55	7.5 µg/m³	16.0	24h	1
2026-07-11	24	15–44	5.7 µg/m³	16.1	24h	1
2026-07-10	38	11–270	15.7 µg/m³	30.2	24h	1
2026-07-09	26	16–41	6.2 µg/m³	16.0	19h	1
2026-07-08	20	15–25	4.9 µg/m³	8.5	6h	1

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