What is the air quality trend in Chattogram?

Over the past 15 days, Chattogram had an average AQI of 120 based on station measurements. The worst day was 2026-05-24 with AQI 208.

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.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

308h

PM2.5 Station

308h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-29	94	59–187	36.7 µg/m³	54.3	16h	2
2026-05-28	136	38–240	74.8 µg/m³	52.8	23h	2
2026-05-27	141	54–307	83.9 µg/m³	94.0	21h	2
2026-05-26	150	56–203	81.9 µg/m³	50.7	23h	2
2026-05-25	133	21–225	64.5 µg/m³	49.3	23h	2
2026-05-24	208	79–342	145.6 µg/m³	76.4	21h	1
2026-05-23	118	71–225	52.2 µg/m³	62.8	19h	2
2026-05-22	94	70–154	32.4 µg/m³	70.4	22h	2
2026-05-21	96	70–165	33.9 µg/m³	93.3	23h	2
2026-05-20	73	41–111	22.5 µg/m³	40.4	23h	2
2026-05-19	75	61–122	23.3 µg/m³	42.3	21h	2
2026-05-18	74	52–114	23.0 µg/m³	36.1	23h	2
2026-05-17	77	53–149	24.0 µg/m³	50.6	23h	2
2026-05-16	175	45–326	112.4 µg/m³	14.3	21h	2
2026-05-15	160	71–262	98.4 µg/m³	31.3	6h	2

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