SmogRank / World / South Africa / Gauteng / May 2026
Most polluted cities in Gauteng, South Africa, May 2026
No city in Gauteng, South Africa had measurements on 70% of the days, so May 2026 has no board for Gauteng, South Africa.
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
All cities in the world, May 2026 · All cities in South Africa, May 2026 · Gauteng now