SmogRank / Countries / South Africa / September 2025

Most polluted cities in South Africa, September 2025

3 cities in South Africa ranked by their average PM2.5 over the 30 days. Worst: Vereeniging at 39.6 µg/m³, #25 of 2,439 cities in the world. Cleanest: Richards Bay at 14.2. A city needs measurements on 70% of the days to be ranked.

  1. 1Vereeniginglow-cost sensorsGauteng
    39.6
  2. 2Shakaskraallow-cost sensorsKwaZulu-Natal
    19.7
  3. 3Richards Baylow-cost sensorsKwaZulu-Natal
    14.2
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

All cities in the world, September 2025 · South Africa now