What is the air quality trend in Caotun?

Over the past 15 days, Caotun had an average AQI of 56 based on station measurements. The worst day was 2026-05-30 with AQI 67.

How is Caotun air quality measured?

Air quality in Caotun 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 Caotun, Taiwan

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

333h

PM2.5 Station

333h · 8 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	67	55–76	19.6 µg/m³	10h	19
2026-05-29	60	44–79	16.6 µg/m³	24h	19
2026-05-28	55	41–75	14.1 µg/m³	24h	20
2026-05-27	54	42–76	13.8 µg/m³	24h	20
2026-05-26	53	40–69	13.5 µg/m³	24h	21
2026-05-25	59	43–150	16.1 µg/m³	24h	21
2026-05-24	56	44–63	14.5 µg/m³	24h	20
2026-05-23	57	43–73	15.0 µg/m³	24h	21
2026-05-22	57	43–74	15.2 µg/m³	24h	22
2026-05-21	61	49–92	16.8 µg/m³	24h	20
2026-05-20	53	41–67	13.5 µg/m³	24h	23
2026-05-19	54	42–64	14.0 µg/m³	24h	22
2026-05-18	54	45–62	13.8 µg/m³	24h	21
2026-05-17	51	39–73	13.2 µg/m³	23h	22
2026-05-16	49	36–58	12.0 µg/m³	12h	23

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