Air Quality Lab — Monrovia, Liberia
Air Quality Profile·
Monrovia reports an annual PM2.5 of 19.4 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Monrovia
Liberia
LiberiaAnnual Average
ModerateWHO annual classification
19.4µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
4949 µg/m³ — Unhealthy
3535 µg/m³ — Poor
2424 µg/m³ — Moderate
2020 µg/m³ — Moderate
8.78.7 µg/m³ — Good
6.86.8 µg/m³ — Good
1313 µg/m³ — Fair
1010 µg/m³ — Fair
8.18.1 µg/m³ — Good
8.68.6 µg/m³ — Good
1313 µg/m³ — Fair
3737 µg/m³ — Unhealthy
Jan
Feb
Mar
Apr
May
Jun
4949 µg/m³ — Unhealthy
3535 µg/m³ — Poor
2424 µg/m³ — Moderate
2020 µg/m³ — Moderate
8.78.7 µg/m³ — Good
6.86.8 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
1313 µg/m³ — Fair
1010 µg/m³ — Fair
8.18.1 µg/m³ — Good
8.68.6 µg/m³ — Good
1313 µg/m³ — Fair
3737 µg/m³ — Unhealthy
Best months: Jun, Sep–OctWorst 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 Liberia
Monrovia: 19.4 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