SmogRank / World / Africa / South Africa / Northern Cape
Most polluted cities in Northern Cape, South Africa
2 measured cities, last 24 hours; 0 above the WHO 24-hour guideline. Worst: De Aar at 11.7 µg/m³, #493 in the world.
Now: cities by their PM2.5 over the last 24 hours; fires, smoke, dust and ash from Oct 11, the newest day mapped.
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
Northern Cape 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 |
|---|---|
| Kimberley | ≈ 7 µg/m³ |
| Postmasburg | ≈ 4 µg/m³ |
| Pampierstad | ≈ 7 µg/m³ |
| Warrenton | ≈ 7 µg/m³ |
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SmogRank, most polluted cities in Northern Cape, South Africa by mean PM2.5 (µg/m³), last 24 hours to 12 Oct 2026, 22:00 UTC: each city's mean of its hourly values, cities measured in 18 or more of the 24 hours. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/za/region/northern-cape.
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
Updated 2026-10-12 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.