Air Quality Lab — Johannesburg, South Africa
Air Quality Profile
Johannesburg reports an annual PM2.5 of 37.0 µg/m³. That's above the EU annual limit of 25 µg/m³ — long-term exposure here carries documented health trade-offs.
Johannesburg
South Africa
South AfricaAnnual Average
UnhealthyWHO annual classification
37.0µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
3131 µg/m³ — Poor
3131 µg/m³ — Poor
3131 µg/m³ — Poor
3131 µg/m³ — Poor
3939 µg/m³ — Unhealthy
5151 µg/m³ — Very Unhealthy
5151 µg/m³ — Very Unhealthy
4848 µg/m³ — Unhealthy
4343 µg/m³ — Unhealthy
3232 µg/m³ — Poor
2828 µg/m³ — Poor
2828 µg/m³ — Poor
Jan
Feb
Mar
Apr
May
Jun
3131 µg/m³ — Poor
3131 µg/m³ — Poor
3131 µg/m³ — Poor
3131 µg/m³ — Poor
3939 µg/m³ — Unhealthy
5151 µg/m³ — Very Unhealthy
Jul
Aug
Sep
Oct
Nov
Dec
5151 µg/m³ — Very Unhealthy
4848 µg/m³ — Unhealthy
4343 µg/m³ — Unhealthy
3232 µg/m³ — Poor
2828 µg/m³ — Poor
2828 µg/m³ — Poor
Best months: Feb, Nov–DecWorst months: Jun–Aug
Poor25–35 µg/m³Unhealthy35–50 µg/m³Very Unhealthy50–75 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across South Africa
Johannesburg: 37.0 µg/m³. Typical range in South Africa: 12.8–23.3 µg/m³. Low anchor: Port Elizabeth, 7.3 µg/m³. High anchor: Diepsloot, 162.1 µg/m³.
265 cities tracked