SmogRank / World / Africa / South Africa / Free State

Most polluted cities in Free State, South Africa

No city in Free State, South Africa has enough readings to rank for the last 24 hours.

The UK's Daily Air Quality Index (1 to 10), PM2.5 bands. 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

Free State 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	Band
Bloemfontein	≈ 8 µg/m³	Low
Welkom	≈ 12 µg/m³	Low
Botshabelo	≈ 8 µg/m³	Low
Virginia	≈ 12 µg/m³	Low
Kroonstad	≈ 12 µg/m³	Low
Kutloanong	≈ 12 µg/m³	Low
Bethlehem	≈ 10 µg/m³	Low
Phuthaditjhaba	≈ 10 µg/m³	Low
Odendaalsrus	≈ 12 µg/m³	Low
Thaba Nchu	≈ 8 µg/m³	Low
Bothaville	≈ 12 µg/m³	Low
Parys	≈ 15 µg/m³	Low
Viljoenskroon	≈ 12 µg/m³	Low
Ficksburg	≈ 12 µg/m³	Low
Wesselsbron	≈ 11 µg/m³	Low
Senekal	≈ 11 µg/m³	Low
Theunissen	≈ 10 µg/m³	Low
Harrismith	≈ 11 µg/m³	Low
Heilbron	≈ 14 µg/m³	Low
Allanridge	≈ 12 µg/m³	Low
Frankfort	≈ 15 µg/m³	Low
Ladybrand	≈ 11 µg/m³	Low
Bultfontein	≈ 9 µg/m³	Low
Phomolong	≈ 12 µg/m³	Low
Reitz	≈ 11 µg/m³	Low
Deneysville	≈ 17 µg/m³	Low
Hennenman	≈ 12 µg/m³	Low
Vrede	≈ 11 µg/m³	Low
Hlohlolwane	≈ 11 µg/m³	Low
Villiers	≈ 13 µg/m³	Low
Hoopstad	≈ 11 µg/m³	Low
Zastron	≈ 7 µg/m³	Low
Marquard	≈ 11 µg/m³	Low
Tshiame	≈ 10 µg/m³	Low
Vredefort	≈ 12 µg/m³	Low
Winburg	≈ 10 µg/m³	Low
Koppies	≈ 13 µg/m³	Low
Fouriesburg	≈ 10 µg/m³	Low
Winnie Mandela	≈ 8 µg/m³	Low
Mamafubedu	≈ 12 µg/m³	Low

Updated 2026-10-02 06:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the UK DAQI PM2.5 sub-index.