Air Quality Lab — Sylhet, Bangladesh
Air Quality Profile·
Sylhet reports an annual PM2.5 of 42.4 µg/m³. That's above the EU annual limit of 25 µg/m³ — long-term exposure here carries documented health trade-offs.
Sylhet
Bangladesh
BangladeshAnnual Average
UnhealthyWHO annual classification
42.4µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
7777 µg/m³ — Hazardous
6969 µg/m³ — Very Unhealthy
5858 µg/m³ — Very Unhealthy
4545 µg/m³ — Unhealthy
3232 µg/m³ — Poor
2727 µg/m³ — Poor
2323 µg/m³ — Moderate
2626 µg/m³ — Poor
2424 µg/m³ — Moderate
2727 µg/m³ — Poor
3636 µg/m³ — Unhealthy
6666 µg/m³ — Very Unhealthy
Jan
Feb
Mar
Apr
May
Jun
7777 µg/m³ — Hazardous
6969 µg/m³ — Very Unhealthy
5858 µg/m³ — Very Unhealthy
4545 µg/m³ — Unhealthy
3232 µg/m³ — Poor
2727 µg/m³ — Poor
Jul
Aug
Sep
Oct
Nov
Dec
2323 µg/m³ — Moderate
2626 µg/m³ — Poor
2424 µg/m³ — Moderate
2727 µg/m³ — Poor
3636 µg/m³ — Unhealthy
6666 µg/m³ — Very Unhealthy
Best months: Jul–SepWorst months: Jan–Feb, Dec
Moderate15–25 µg/m³Poor25–35 µg/m³Unhealthy35–50 µg/m³Very Unhealthy50–75 µg/m³Hazardous>75 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Bangladesh
Sylhet: 42.4 µg/m³. Typical range in Bangladesh: 52.7–65.2 µg/m³. Low anchor: Bāndarban, 32.6 µg/m³. High anchor: Dhaka, 80.6 µg/m³.
97 cities tracked