SmogRank / World / South Africa / May 2025
Most polluted cities in South Africa, May 2025
1 city in South Africa ranked by their average PM2.5 over the 31 days. Worst: Shakaskraal at 23.2 µg/m³, #211 of 2,451 cities in the world. A city needs measurements on 70% of the days to be ranked.
- 1Shakaskraallow-cost sensorsKwaZulu-Natal 23.2
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
PM2.5 in µg/m³, coloured by the US EPA's PM2.5 categories. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
All cities in the world, May 2025 · South Africa now
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SmogRank, most polluted cities in South Africa, PM2.5, May 2025, smogrank.com/za/history/2025-05 (accessed 2 Oct 2026).
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