Air Quality Lab — Mossendjo, Republic of the Congo
Air Quality Profile·
Mossendjo reports an annual PM2.5 of 24.8 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Mossendjo
Republic of the Congo
Republic of the CongoAnnual Average
ModerateWHO annual classification
24.8µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2121 µg/m³ — Moderate
2222 µg/m³ — Moderate
2121 µg/m³ — Moderate
1515 µg/m³ — Moderate
3030 µg/m³ — Poor
4747 µg/m³ — Unhealthy
4242 µg/m³ — Unhealthy
3535 µg/m³ — Unhealthy
1919 µg/m³ — Moderate
1616 µg/m³ — Moderate
1414 µg/m³ — Fair
1616 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
2121 µg/m³ — Moderate
2222 µg/m³ — Moderate
2121 µg/m³ — Moderate
1515 µg/m³ — Moderate
3030 µg/m³ — Poor
4747 µg/m³ — Unhealthy
Jul
Aug
Sep
Oct
Nov
Dec
4242 µg/m³ — Unhealthy
3535 µg/m³ — Unhealthy
1919 µg/m³ — Moderate
1616 µg/m³ — Moderate
1414 µg/m³ — Fair
1616 µg/m³ — Moderate
Best months: Apr, Nov–DecWorst months: Jun–Aug
Fair10–15 µg/m³Moderate15–25 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 Republic of the Congo
Mossendjo: 24.8 µg/m³. Typical range in Republic of the Congo: 28.3–36.1 µg/m³. Low anchor: Pointe-Noire, 19.5 µg/m³. High anchor: Brazzaville, 39.9 µg/m³.
22 cities tracked