What is the air quality trend in Nan?

Over the past 15 days, Nan had an average AQI of 203 based on station measurements. The worst day was with AQI .

How is Nan air quality measured?

Air quality in Nan 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 Nan, Thailand

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

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

177

Current AQI
Unhealthy

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

256h · 18 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-12	203	181–247	146.1 µg/m³	155.5	14h	20
2026-04-11	190	155–268	122.5 µg/m³	130.7	24h	20
2026-04-10	184	152–228	114.9 µg/m³	122.4	24h	20
2026-04-09	179	80–201	115.7 µg/m³	122.9	17h	18
2026-04-08	188	173–211	125.4 µg/m³	133.4	9h	22
2026-04-07	203	196–214	151.9 µg/m³	162.2	24h	21
2026-04-06	186	178–201	122.3 µg/m³	130.4	17h	21
2026-04-05	174	174–174	100.0 µg/m³	111.0	1h	1
2026-04-04	233	218–253	182.9 µg/m³	196.2	15h	22
2026-04-03	226	195–259	175.0 µg/m³	188.3	24h	21
2026-04-02	227	196–308	176.3 µg/m³	189.2	20h	22
2026-04-01	256	214–291	205.7 µg/m³	221.4	22h	20
2026-03-31	221	187–282	167.7 µg/m³	180.0	22h	20
2026-03-30	191	42–228	139.3 µg/m³	149.1	14h	14
2026-03-29	189	168–203	128.5 µg/m³	138.1	9h	19

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