Air Quality Lab — Nkayi, Republic of the Congo
Air Quality Profile·
Nkayi reports an annual PM2.5 of 28.3 µg/m³. That's above the EU annual limit of 25 µg/m³ — long-term exposure here carries documented health trade-offs.
Nkayi
Republic of the Congo
Republic of the CongoAnnual Average
PoorWHO annual classification
28.3µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2121 µg/m³ — Moderate
2121 µg/m³ — Moderate
2222 µg/m³ — Moderate
2222 µg/m³ — Moderate
3636 µg/m³ — Unhealthy
5656 µg/m³ — Very Unhealthy
4747 µg/m³ — Unhealthy
3939 µg/m³ — Unhealthy
2727 µg/m³ — Poor
2020 µg/m³ — Moderate
1515 µg/m³ — Fair
1414 µg/m³ — Fair
Jan
Feb
Mar
Apr
May
Jun
2121 µg/m³ — Moderate
2121 µg/m³ — Moderate
2222 µg/m³ — Moderate
2222 µg/m³ — Moderate
3636 µg/m³ — Unhealthy
5656 µg/m³ — Very Unhealthy
Jul
Aug
Sep
Oct
Nov
Dec
4747 µg/m³ — Unhealthy
3939 µg/m³ — Unhealthy
2727 µg/m³ — Poor
2020 µg/m³ — Moderate
1515 µg/m³ — Fair
1414 µg/m³ — Fair
Best months: Oct–DecWorst months: Jun–Aug
Fair10–15 µg/m³Moderate15–25 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
Nkayi: 28.3 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