SmogRank / World / Africa / South Africa / North West

Most polluted cities in North West, South Africa

2 measured cities, last 7 days; 1 above the WHO 24-hour guideline. Worst: Marikana at 15.2 µg/m³, #312 in the world.

The UK's Daily Air Quality Index (1 to 10), PM2.5 bands. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Estimated: cities without a monitor

North West cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City	7-day estimate	Band
Rustenburg	≈ 11 µg/m³	Low
Klerksdorp	≈ 12 µg/m³	Low
Potchefstroom	≈ 13 µg/m³	Low
Brits	≈ 13 µg/m³	Low
Orkney	≈ 12 µg/m³	Low
Stilfontein	≈ 12 µg/m³	Low
Ga-Rankuwa	≈ 15 µg/m³	Low
Mafikeng	≈ 8 µg/m³	Low
Schweizer-Reneke	≈ 11 µg/m³	Low
Lichtenburg	≈ 8 µg/m³	Low
Fochville	≈ 17 µg/m³	Low
Vryburg	≈ 9 µg/m³	Low
Letlhabile	≈ 15 µg/m³	Low
Wolmaransstad	≈ 10 µg/m³	Low
Bloemhof	≈ 10 µg/m³	Low
Hartbeestfontein-A	≈ 13 µg/m³	Low
Ventersdorp	≈ 11 µg/m³	Low
Christiana	≈ 9 µg/m³	Low
Itsoseng	≈ 8 µg/m³	Low
Koster	≈ 10 µg/m³	Low
Hartbeesfontein	≈ 11 µg/m³	Low
Ottosdal	≈ 9 µg/m³	Low
Coligny	≈ 9 µg/m³	Low
Zeerust	≈ 8 µg/m³	Low
Leeudoringstad	≈ 11 µg/m³	Low
Makwassie	≈ 10 µg/m³	Low

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SmogRank, most polluted cities in North West, South Africa, PM2.5, last 7 days to 2 Oct 2026, 06:00 UTC, smogrank.com/za/region/north-west?w=7d.

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Updated 2026-10-02 06:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the UK DAQI PM2.5 sub-index.