SmogRank / World / South Africa / North West / January 2023
Most polluted cities in North West, South Africa, January 2023
1 city in North West, South Africa ranked by their average PM2.5 over the 31 days. The only one: Ga-Rankuwa at 26.1 µg/m³, #89 of 1,225 cities in the world. A city needs measurements on 70% of the days to be ranked.
OpenAQ's archive, where our readings come from, has almost none for 7 of these 31 days. Cities in the United States and Europe have them from the EPA's and the European Environment Agency's own records of the same monitors; elsewhere a city's average is over its other days. Why.
- 1Ga-Rankuwa 83
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
All cities in the world, January 2023 · All cities in South Africa, January 2023 · North West now
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SmogRank, most polluted cities in North West, South Africa, PM2.5, January 2023, smogrank.com/za/region/north-west/history/2023-01 (accessed 8 Oct 2026).
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.