Air Quality Lab — Nairobi, Kenya
Air Quality Profile
Nairobi reports an annual PM2.5 of 19.0 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Nairobi
Kenya
KenyaAnnual Average
ModerateWHO annual classification
19.0µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1919 µg/m³ — Moderate
1919 µg/m³ — Moderate
1717 µg/m³ — Moderate
2424 µg/m³ — Moderate
2222 µg/m³ — Moderate
1919 µg/m³ — Moderate
1818 µg/m³ — Moderate
1616 µg/m³ — Moderate
1919 µg/m³ — Moderate
1919 µg/m³ — Moderate
1818 µg/m³ — Moderate
1919 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
1919 µg/m³ — Moderate
1919 µg/m³ — Moderate
1717 µg/m³ — Moderate
2424 µg/m³ — Moderate
2222 µg/m³ — Moderate
1919 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
1818 µg/m³ — Moderate
1616 µg/m³ — Moderate
1919 µg/m³ — Moderate
1919 µg/m³ — Moderate
1818 µg/m³ — Moderate
1919 µg/m³ — Moderate
Best months: Mar, Jul–AugWorst months: Apr–May, Dec
Moderate15–25 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Kenya
Nairobi: 19.0 µg/m³. Typical range in Kenya: 14.7–22.1 µg/m³. Low anchor: El Wak, 10.5 µg/m³. High anchor: Nakuru, 26.7 µg/m³.
113 cities tracked