Air Quality Lab — Bangkok, Thailand
Air Quality Profile
Bangkok reports an annual PM2.5 of 28.7 µg/m³. That's above the EU annual limit of 25 µg/m³ — long-term exposure here carries documented health trade-offs.
Bangkok
Thailand
ThailandAnnual Average
PoorWHO annual classification
28.7µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
4545 µg/m³ — Unhealthy
4343 µg/m³ — Unhealthy
3535 µg/m³ — Unhealthy
2727 µg/m³ — Poor
2525 µg/m³ — Moderate
2020 µg/m³ — Moderate
1515 µg/m³ — Moderate
1616 µg/m³ — Moderate
1919 µg/m³ — Moderate
2929 µg/m³ — Poor
3434 µg/m³ — Poor
3737 µg/m³ — Unhealthy
Jan
Feb
Mar
Apr
May
Jun
4545 µg/m³ — Unhealthy
4343 µg/m³ — Unhealthy
3535 µg/m³ — Unhealthy
2727 µg/m³ — Poor
2525 µg/m³ — Moderate
2020 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
1515 µg/m³ — Moderate
1616 µg/m³ — Moderate
1919 µg/m³ — Moderate
2929 µg/m³ — Poor
3434 µg/m³ — Poor
3737 µg/m³ — Unhealthy
Best months: Jul–SepWorst months: Jan–Feb, 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 Thailand
Bangkok: 28.7 µg/m³. Typical range in Thailand: 21.3–28.9 µg/m³. Low anchor: Phuket, 15.1 µg/m³. High anchor: Chiang Mai, 32.6 µg/m³.
202 cities tracked