What is the air quality trend in Yên Bái?

Over the past 3 days, Yên Bái had an average AQI of 69 based on station measurements. The worst day was 2026-10-18 with AQI 79.

How is Yên Bái air quality measured?

Air quality in Yên Bái 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 Yên Bái, Vietnam

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

Historical PM2.5 and AQI trend from monitoring stations near Yên Bái, Vietnam.

133

Current AQI
Unhealthy for sensitive groups CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

28h

PM2.5 Station

28h · 2 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-20	62	21–152	18.9 µg/m³	15h	2
2026-10-19	66	2–106	20.4 µg/m³	11h	2
2026-10-18	79	62–96	25.4 µg/m³	2h	1

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