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, #314 in the world.

North West: 2 measured citiesNorthern CapeKwaZulu-Natal: 5 measured citiesFree StateLimpopo: 8 measured citiesMpumalanga: 7 measured citiesGauteng: 4 measured cities#2 Hartbeespoort: 10.4 µg/m³#1 Marikana: 15.2 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
  1. 1Marikana 62
  2. 2Hartbeespoort 53
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). 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.

City7-day estimateBand
Rustenburg≈ 11 µg/m³Moderate
Klerksdorp≈ 12 µg/m³Moderate
Potchefstroom≈ 13 µg/m³Moderate
Brits≈ 13 µg/m³Moderate
Orkney≈ 12 µg/m³Moderate
Stilfontein≈ 12 µg/m³Moderate
Ga-Rankuwa≈ 15 µg/m³Moderate
Mafikeng≈ 8 µg/m³Good
Schweizer-Reneke≈ 11 µg/m³Moderate
Lichtenburg≈ 8 µg/m³Good
Fochville≈ 17 µg/m³Moderate
Vryburg≈ 9 µg/m³Good
Letlhabile≈ 15 µg/m³Moderate
Wolmaransstad≈ 10 µg/m³Moderate
Bloemhof≈ 10 µg/m³Moderate
Hartbeestfontein-A≈ 13 µg/m³Moderate
Ventersdorp≈ 11 µg/m³Moderate
Christiana≈ 9 µg/m³Good
Itsoseng≈ 8 µg/m³Good
Koster≈ 10 µg/m³Moderate
Hartbeesfontein≈ 11 µg/m³Moderate
Ottosdal≈ 9 µg/m³Moderate
Coligny≈ 9 µg/m³Moderate
Zeerust≈ 8 µg/m³Good
Leeudoringstad≈ 11 µg/m³Moderate
Makwassie≈ 10 µg/m³Moderate

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SmogRank, most polluted cities in North West, South Africa, PM2.5, last 7 days to 2 Oct 2026, 05:00 UTC, smogrank.com/za/region/north-west?w=7d.

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Updated 2026-10-02 05:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.