Today the UV index peaks highest in Johannesburg at about 8 (very high) — roughly 13 minutes of midday sun before fair skin starts to burn. 3 of the 12 cities below reach very high or worse.
| City | Now | Peak today | |
|---|---|---|---|
| Johannesburg | 4 | 8 | very high |
| Pretoria | 4 | 8 | very high |
| Polokwane | 4 | 8 | very high |
| Mbombela | 4 | 7 | high |
| Bloemfontein | 4 | 7 | high |
| Upington | 5 | 7 | high |
| Kimberley | 5 | 7 | high |
| Durban | 3 | 7 | high |
| Stellenbosch | 4 | 6 | high |
| George | 4 | 6 | high |
| Gqeberha | 4 | 6 | high |
| Cape Town | 4 | 6 | high |
Readings are live from Open-Meteo and update through the day. “Now” is blank after dark, because the sun is down and the index is zero everywhere.