Air Quality Lab — Brazzaville, Republic of the Congo
Air Quality Profile·
Brazzaville reports an annual PM2.5 of 39.9 µg/m³. That's above the EU annual limit of 25 µg/m³ — long-term exposure here carries documented health trade-offs.
Brazzaville
Republic of the Congo
Republic of the CongoAnnual Average
UnhealthyWHO annual classification
39.9µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
3636 µg/m³ — Unhealthy
4040 µg/m³ — Unhealthy
3535 µg/m³ — Poor
3535 µg/m³ — Unhealthy
4949 µg/m³ — Unhealthy
6363 µg/m³ — Very Unhealthy
5454 µg/m³ — Very Unhealthy
5151 µg/m³ — Very Unhealthy
4343 µg/m³ — Unhealthy
2727 µg/m³ — Poor
2121 µg/m³ — Moderate
2727 µg/m³ — Poor
Jan
Feb
Mar
Apr
May
Jun
3636 µg/m³ — Unhealthy
4040 µg/m³ — Unhealthy
3535 µg/m³ — Poor
3535 µg/m³ — Unhealthy
4949 µg/m³ — Unhealthy
6363 µg/m³ — Very Unhealthy
Jul
Aug
Sep
Oct
Nov
Dec
5454 µg/m³ — Very Unhealthy
5151 µg/m³ — Very Unhealthy
4343 µg/m³ — Unhealthy
2727 µg/m³ — Poor
2121 µg/m³ — Moderate
2727 µg/m³ — Poor
Best months: Oct–DecWorst months: Jun–Aug
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 Republic of the Congo
Brazzaville: 39.9 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: Oyo, 40.3 µg/m³.
22 cities tracked