Air Quality Lab — Butwāl, Nepal
Air Quality Profile·
Butwāl reports an annual PM2.5 of 45.0 µg/m³. That's above the EU annual limit of 25 µg/m³ — long-term exposure here carries documented health trade-offs.
Butwāl
Nepal
NepalAnnual Average
UnhealthyWHO annual classification
45.0µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
5454 µg/m³ — Very Unhealthy
6464 µg/m³ — Very Unhealthy
5151 µg/m³ — Very Unhealthy
5757 µg/m³ — Very Unhealthy
4242 µg/m³ — Unhealthy
3838 µg/m³ — Unhealthy
3232 µg/m³ — Poor
2626 µg/m³ — Poor
3030 µg/m³ — Poor
3737 µg/m³ — Unhealthy
5555 µg/m³ — Very Unhealthy
5353 µg/m³ — Very Unhealthy
Jan
Feb
Mar
Apr
May
Jun
5454 µg/m³ — Very Unhealthy
6464 µg/m³ — Very Unhealthy
5151 µg/m³ — Very Unhealthy
5757 µg/m³ — Very Unhealthy
4242 µg/m³ — Unhealthy
3838 µg/m³ — Unhealthy
Jul
Aug
Sep
Oct
Nov
Dec
3232 µg/m³ — Poor
2626 µg/m³ — Poor
3030 µg/m³ — Poor
3737 µg/m³ — Unhealthy
5555 µg/m³ — Very Unhealthy
5353 µg/m³ — Very Unhealthy
Best months: Jul–SepWorst months: Feb, Apr, Nov
Poor25–35 µg/m³Unhealthy35–50 µg/m³Very Unhealthy50–75 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Nepal
Butwāl: 45.0 µg/m³. Typical range in Nepal: 31.0–45.5 µg/m³. Low anchor: Dārchulā, 22.5 µg/m³. High anchor: Gaur, 55.8 µg/m³.
40 cities tracked