Air Quality Lab — Bumpe, Sierra Leone
Air Quality Profile·
Bumpe 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.
Bumpe
Sierra Leone
Sierra LeoneAnnual Average
ModerateWHO annual classification
23.3µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
4444 µg/m³ — Unhealthy
3939 µg/m³ — Unhealthy
3333 µg/m³ — Poor
3434 µg/m³ — Poor
1616 µg/m³ — Moderate
8.98.9 µg/m³ — Good
1212 µg/m³ — Fair
1212 µg/m³ — Fair
9.89.8 µg/m³ — Good
1313 µg/m³ — Fair
2222 µg/m³ — Moderate
3636 µg/m³ — Unhealthy
Jan
Feb
Mar
Apr
May
Jun
4444 µg/m³ — Unhealthy
3939 µg/m³ — Unhealthy
3333 µg/m³ — Poor
3434 µg/m³ — Poor
1616 µg/m³ — Moderate
8.98.9 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
1212 µg/m³ — Fair
1212 µg/m³ — Fair
9.89.8 µg/m³ — Good
1313 µg/m³ — Fair
2222 µg/m³ — Moderate
3636 µg/m³ — Unhealthy
Best months: Jun, Aug–SepWorst months: Jan–Feb, Dec
Good5–10 µg/m³Fair10–15 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 Sierra Leone
Bumpe: 23.3 µg/m³. Typical range in Sierra Leone: 23.7–26.5 µg/m³. High anchor: Freetown, 27.9 µg/m³.
12 cities tracked