SmogRank / World / Africa / South Africa / North West
Most polluted cities in North West, South Africa
No city in North West, South Africa has enough readings to rank so far this year.
A city joins this ranking with enough days of readings so far this year; none here has that right now, so there is nothing to map or chart.
Last 24 hours: 2 measured cities · Last 7 days: 3 measured cities · Last 30 days: 2 measured cities
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.
| City | 7-day estimate |
|---|---|
| Rustenburg | ≈ 6 µg/m³ |
| Klerksdorp | ≈ 10 µg/m³ |
| Potchefstroom | ≈ 12 µg/m³ |
| Brits | ≈ 7 µg/m³ |
| Orkney | ≈ 12 µg/m³ |
| Stilfontein | ≈ 10 µg/m³ |
| Ga-Rankuwa | ≈ 9 µg/m³ |
| Mafikeng | ≈ 7 µg/m³ |
| Schweizer-Reneke | ≈ 12 µg/m³ |
| Lichtenburg | ≈ 8 µg/m³ |
| Fochville | ≈ 17 µg/m³ |
| Vryburg | ≈ 7 µg/m³ |
| Letlhabile | ≈ 9 µg/m³ |
| Wolmaransstad | ≈ 10 µg/m³ |
| Bloemhof | ≈ 13 µg/m³ |
| Hartbeestfontein-A | ≈ 7 µg/m³ |
| Ventersdorp | ≈ 8 µg/m³ |
| Christiana | ≈ 10 µg/m³ |
| Itsoseng | ≈ 8 µg/m³ |
| Koster | ≈ 6 µg/m³ |
| Hartbeesfontein | ≈ 11 µg/m³ |
| Ottosdal | ≈ 9 µg/m³ |
| Coligny | ≈ 7 µg/m³ |
| Zeerust | ≈ 7 µg/m³ |
| Leeudoringstad | ≈ 11 µg/m³ |
| Makwassie | ≈ 8 µg/m³ |
Bad-air episodes in North West
Times when many cities around here had PM2.5 at twice their usual or more on the same days.
Updated 2026-10-06 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.