What is the air quality trend in Cầu Diễn?

Over the past 3 days, Cầu Diễn had an average AQI of 99 based on station measurements. The worst day was 2026-07-22 with AQI 114.

How is Cầu Diễn air quality measured?

Air quality in Cầu Diễn 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 Cầu Diễn, Vietnam

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

Historical PM2.5 and AQI trend from monitoring stations near Cầu Diễn, Vietnam.

117

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

47h

PM2.5 Station

47h · 2 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	114	85–133	40.5 µg/m³	45.1	4h	2
2026-07-21	104	76–152	36.5 µg/m³	40.8	24h	2
2026-07-20	79	21–142	26.2 µg/m³	30.1	19h	2

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