What is the air quality trend in Sylhet?

Over the past 7 days, Sylhet had an average AQI of 97 based on station measurements. The worst day was 2026-07-18 with AQI 229.

How is Sylhet air quality measured?

Air quality in Sylhet 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 Sylhet, Bangladesh

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

141h

PM2.5 Station

141h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-21	43	21–64	10.6 µg/m³	29.4	20h	1
2026-07-20	50	21–105	13.7 µg/m³	31.5	23h	1
2026-07-19	172	42–294	128.7 µg/m³	31.3	14h	1
2026-07-18	229	52–294	179.9 µg/m³	131.5	21h	1
2026-07-17	92	38–303	48.2 µg/m³	73.6	22h	1
2026-07-16	59	14–85	16.9 µg/m³	48.7	22h	1
2026-07-15	38	15–74	9.5 µg/m³	32.0	19h	1

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