What is the air quality trend in Hengchun?

Over the past 8 days, Hengchun had an average AQI of 50 based on station measurements. The worst day was 2026-07-20 with AQI 62.

How is Hengchun air quality measured?

Air quality in Hengchun 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 Hengchun, Taiwan

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

Historical PM2.5 and AQI trend from monitoring stations near Hengchun, Taiwan.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

64h

PM2.5 Station

64h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	55	52–58	14.0 µg/m³	2h	1
2026-07-21	46	9–60	11.8 µg/m³	5h	1
2026-07-20	62	41–119	17.9 µg/m³	6h	1
2026-07-19	48	17–127	14.0 µg/m³	11h	1
2026-07-18	60	30–96	18.1 µg/m³	9h	1
2026-07-17	55	22–119	15.5 µg/m³	14h	1
2026-07-16	41	25–64	10.2 µg/m³	10h	1
2026-07-15	33	17–46	8.0 µg/m³	7h	1

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