Air Quality Lab — Kampong Chhnang, Cambodia
Air Quality Profile·
Kampong Chhnang reports an annual PM2.5 of 23.3 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Kampong Chhnang
Cambodia
CambodiaAnnual Average
ModerateWHO annual classification
23.3µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
3030 µg/m³ — Poor
3333 µg/m³ — Poor
3535 µg/m³ — Poor
2828 µg/m³ — Poor
2222 µg/m³ — Moderate
1919 µg/m³ — Moderate
1919 µg/m³ — Moderate
1818 µg/m³ — Moderate
1818 µg/m³ — Moderate
2121 µg/m³ — Moderate
1717 µg/m³ — Moderate
2020 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
3030 µg/m³ — Poor
3333 µg/m³ — Poor
3535 µg/m³ — Poor
2828 µg/m³ — Poor
2222 µg/m³ — Moderate
1919 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
1919 µg/m³ — Moderate
1818 µg/m³ — Moderate
1818 µg/m³ — Moderate
2121 µg/m³ — Moderate
1717 µg/m³ — Moderate
2020 µg/m³ — Moderate
Best months: Aug–Sep, NovWorst months: Jan–Mar
Moderate15–25 µg/m³Poor25–35 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Cambodia
Kampong Chhnang: 23.3 µg/m³. Typical range in Cambodia: 20.9–23.4 µg/m³. Low anchor: Sihanoukville, 17.4 µg/m³. High anchor: Phnom Penh, 32.2 µg/m³.
27 cities tracked