Air Quality Lab — Greenville, Liberia
Air Quality Profile·
Greenville reports an annual PM2.5 of 14.3 µg/m³. That's roughly double the WHO 2021 guideline but still far below the EU annual limit of 25 µg/m³.
Greenville
Liberia
LiberiaAnnual Average
FairWHO annual classification
14.3µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
3232 µg/m³ — Poor
3030 µg/m³ — Poor
1515 µg/m³ — Moderate
1010 µg/m³ — Fair
8.78.7 µg/m³ — Good
9.09.0 µg/m³ — Good
9.99.9 µg/m³ — Good
1212 µg/m³ — Fair
8.18.1 µg/m³ — Good
6.76.7 µg/m³ — Good
8.48.4 µg/m³ — Good
2222 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
3232 µg/m³ — Poor
3030 µg/m³ — Poor
1515 µg/m³ — Moderate
1010 µg/m³ — Fair
8.78.7 µg/m³ — Good
9.09.0 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
9.99.9 µg/m³ — Good
1212 µg/m³ — Fair
8.18.1 µg/m³ — Good
6.76.7 µg/m³ — Good
8.48.4 µg/m³ — Good
2222 µg/m³ — Moderate
Best months: Sep–NovWorst months: Jan–Feb, Dec
Good5–10 µg/m³Fair10–15 µg/m³Moderate15–25 µg/m³Poor25–35 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Liberia
Greenville: 14.3 µg/m³. Typical range in Liberia: 19.2–22.6 µg/m³. Low anchor: Buchanan, 14.2 µg/m³. High anchor: New Yekepa, 24.8 µg/m³.
16 cities tracked