Air Quality Lab — São Tomé, Sao Tome and Principe
Air Quality Profile·
São Tomé reports an annual PM2.5 of 14.5 µg/m³. That's roughly double the WHO 2021 guideline but still far below the EU annual limit of 25 µg/m³.
São Tomé
Sao Tome and Principe
Sao Tome and PrincipeAnnual Average
FairWHO annual classification
14.5µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2121 µg/m³ — Moderate
2222 µg/m³ — Moderate
1515 µg/m³ — Moderate
9.09.0 µg/m³ — Good
1111 µg/m³ — Fair
1616 µg/m³ — Moderate
2020 µg/m³ — Moderate
1717 µg/m³ — Moderate
1313 µg/m³ — Fair
8.58.5 µg/m³ — Good
6.46.4 µg/m³ — Good
1515 µg/m³ — Fair
Jan
Feb
Mar
Apr
May
Jun
2121 µg/m³ — Moderate
2222 µg/m³ — Moderate
1515 µg/m³ — Moderate
9.09.0 µg/m³ — Good
1111 µg/m³ — Fair
1616 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
2020 µg/m³ — Moderate
1717 µg/m³ — Moderate
1313 µg/m³ — Fair
8.58.5 µg/m³ — Good
6.46.4 µg/m³ — Good
1515 µg/m³ — Fair
Best months: Apr, Oct–NovWorst months: Jan–Feb, Jul
Good5–10 µg/m³Fair10–15 µg/m³Moderate15–25 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Africa
São Tomé: 14.5 µg/m³. Typical range in Africa: 14.0–30.4 µg/m³. Low anchor: Cape Town, 9.4 µg/m³. High anchor: Diepsloot, 162.1 µg/m³.
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