SmogRank / Countries / South Africa / December 2025

Most polluted cities in South Africa, December 2025

4 cities in South Africa ranked by their average PM2.5 over the 31 days. Worst: Vereeniging at 23.3 µg/m³, #289 of 2,360 cities in the world. Cleanest: Richards Bay at 3.6. A city needs measurements on 70% of the days to be ranked.

  1. 1Vereeniginglow-cost sensorsGauteng
    23.3
  2. 2Shakaskraallow-cost sensorsKwaZulu-Natal
    6.6
  3. 3Tongaatlow-cost sensorsKwaZulu-Natal
    5.6
  4. 4Richards Baylow-cost sensorsKwaZulu-Natal
    3.6
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, December 2025 · South Africa now