What is the air quality trend in Udon Thani?

Over the past 14 days, Udon Thani had an average AQI of 53 based on station measurements. The worst day was 2026-07-19 with AQI 80.

How is Udon Thani air quality measured?

Air quality in Udon Thani 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 Udon Thani, Thailand

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

Historical PM2.5 and AQI trend from monitoring stations near Udon Thani, Thailand.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

172h

PM2.5 Station

172h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	41	23–58	10.1 µg/m³	6h	1
2026-07-20	66	66–66	19.2 µg/m³	1h	1
2026-07-19	80	66–95	26.1 µg/m³	2h	1
2026-07-18	66	53–85	19.0 µg/m³	5h	1
2026-07-17	53	27–73	14.0 µg/m³	10h	1
2026-07-16	60	27–89	17.1 µg/m³	9h	1
2026-07-15	52	19–74	14.0 µg/m³	20h	1
2026-07-14	46	20–78	12.3 µg/m³	23h	1
2026-07-13	45	15–65	11.6 µg/m³	19h	1
2026-07-12	54	36–78	14.5 µg/m³	22h	1
2026-07-11	53	29–75	13.9 µg/m³	19h	1
2026-07-10	47	18–61	11.9 µg/m³	17h	1
2026-07-09	48	26–65	12.5 µg/m³	10h	1
2026-07-08	42	18–64	10.6 µg/m³	9h	1

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