Air Quality Lab — Kathmandu, Nepal
Air Quality Profile·
Kathmandu 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.
Kathmandu
Nepal
NepalAnnual Average
UnhealthyWHO annual classification
42.4µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
6363 µg/m³ — Very Unhealthy
6868 µg/m³ — Very Unhealthy
4444 µg/m³ — Unhealthy
5959 µg/m³ — Very Unhealthy
3434 µg/m³ — Poor
2828 µg/m³ — Poor
2424 µg/m³ — Moderate
2121 µg/m³ — Moderate
2222 µg/m³ — Moderate
3030 µg/m³ — Poor
4747 µg/m³ — Unhealthy
6767 µg/m³ — Very Unhealthy
Jan
Feb
Mar
Apr
May
Jun
6363 µg/m³ — Very Unhealthy
6868 µg/m³ — Very Unhealthy
4444 µg/m³ — Unhealthy
5959 µg/m³ — Very Unhealthy
3434 µg/m³ — Poor
2828 µg/m³ — Poor
Jul
Aug
Sep
Oct
Nov
Dec
2424 µg/m³ — Moderate
2121 µg/m³ — Moderate
2222 µg/m³ — Moderate
3030 µg/m³ — Poor
4747 µg/m³ — Unhealthy
6767 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/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Nepal
Kathmandu: 42.4 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