What is the air quality trend in Chattogram?

Over the past 7 days, Chattogram had an average AQI of 212 based on station measurements. The worst day was 2026-10-16 with AQI 258.

How is Chattogram air quality measured?

Air quality in Chattogram 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 Chattogram, Bangladesh

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

Historical PM2.5 and AQI trend from monitoring stations near Chattogram, Bangladesh.

154

Current AQI
Unhealthy Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

154h

PM2.5 Station

154h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-20	173	120–263	99.3 µg/m³	94.5	22h	2
2026-10-19	198	151–282	130.8 µg/m³	123.3	23h	2
2026-10-18	187	114–234	126.1 µg/m³	223.5	23h	2
2026-10-17	175	81–222	113.4 µg/m³	369.7	20h	2
2026-10-16	258	141–325	199.1 µg/m³	493.0	21h	2
2026-10-15	246	70–339	195.1 µg/m³	364.1	23h	2
2026-10-14	251	135–295	198.9 µg/m³	247.0	22h	2

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