Air Quality Lab — Hanoi, Vietnam
Air Quality Profile·
Hanoi reports an annual PM2.5 of 35.4 µg/m³. That's above the EU annual limit of 25 µg/m³ — long-term exposure here carries documented health trade-offs.
Hanoi
Vietnam
VietnamAnnual Average
UnhealthyWHO annual classification
35.4µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
4646 µg/m³ — Unhealthy
3434 µg/m³ — Poor
3333 µg/m³ — Poor
3030 µg/m³ — Poor
4040 µg/m³ — Unhealthy
3131 µg/m³ — Poor
2424 µg/m³ — Moderate
3030 µg/m³ — Poor
3131 µg/m³ — Poor
3434 µg/m³ — Poor
4242 µg/m³ — Unhealthy
4848 µg/m³ — Unhealthy
Jan
Feb
Mar
Apr
May
Jun
4646 µg/m³ — Unhealthy
3434 µg/m³ — Poor
3333 µg/m³ — Poor
3030 µg/m³ — Poor
4040 µg/m³ — Unhealthy
3131 µg/m³ — Poor
Jul
Aug
Sep
Oct
Nov
Dec
2424 µg/m³ — Moderate
3030 µg/m³ — Poor
3131 µg/m³ — Poor
3434 µg/m³ — Poor
4242 µg/m³ — Unhealthy
4848 µg/m³ — Unhealthy
Best months: Apr, Jul–AugWorst months: Jan, Nov–Dec
Moderate15–25 µg/m³Poor25–35 µg/m³Unhealthy35–50 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Vietnam
Hanoi: 35.4 µg/m³. Typical range in Vietnam: 19.2–28.5 µg/m³. Low anchor: Vũng Tàu, 15.8 µg/m³. High anchor: Ninh Bình, 39.1 µg/m³.
99 cities tracked