Skin terminal
UV and skin index
How much sun is on your skin right now? We read the forecast for your city every half hour, take the cloud out of the clear-sky UV, and say which WHO category the hour falls in, what the air is doing to skin, and the two daylight hours with the least sun.
- Low UV: no protection needed for most skin; daily SPF is still the dermatologists' habit
- Cold: the barrier works harder; skip strong actives tonight if skin feels tight
UV with the cloud taken out; the label is the WHO category. How much sunscreen →
Next 24 hours
| Time | Air | UV index |
|---|---|---|
| 01:00 PM | 39°F | 0.1 |
| 04:00 PM | 45°F | 1 |
| 07:00 PM | 49°F | 0.8 |
| 10:00 PM | 48°F | 0.1 |
| 01:00 AM | 43°F | 0 |
| 04:00 AM | 40°F | 0 |
| 07:00 AM | 38°F | 0 |
| 10:00 AM | 37°F | 0 |
Weather data: MET Norway · updated 01:55 PM
UV and skin index by city
How the index works
MET Norway gives a clear-sky UV index for each hour; cloud cover takes up to 70% of it away, so we show the UV under the sky you actually have. The label is the WHO category (low 0–2, moderate 3–5, high 6–7, very high 8–10, extreme 11+). The score adds what dry air, cold wind and heat do to skin. It is weather, not advice: fair skin, children, some medicines and some skin conditions burn sooner than the category suggests.
What the category means
From 3 up, the WHO's advice is sunscreen, a hat and shade in the middle of the day; from 8 up, limit time outside between 10 and 4. SPF numbers assume a full dose, 2 mg per square centimetre, about half a teaspoon for face, neck and ears; most people use a quarter of that. How much sunscreen →