Tokyo, Japan · 35.68, 139.65
Today's peak is very high. Skin damage happens fast: roughly 21 min before burning at the worst hour. Avoid direct sun entirely inside the danger window below.
About the UV index in Tokyo
Tokyo sits at 35.7° N, in the northern hemisphere. Today's UV peaks at 8: the "very high" band, which uvlevel.net treats as serious danger for unprotected skin at the worst hour.
Tokyo sees the widest UV swing of the year of any latitude band: a sharp summer peak around June and July, and a winter trough around December and January where midday UV can sit near zero for weeks at a time.
Hour by hour today
| Local time | UV index | Risk |
|---|---|---|
| 00:00 | 0 | No danger |
| 01:00 | 0 | No danger |
| 02:00 | 0 | No danger |
| 03:00 | 0 | No danger |
| 04:00 | 0 | No danger |
| 05:00 | 0.1 | No danger |
| 06:00 | 0.4 | No danger |
| 07:00 | 1.4 | No danger |
| 08:00 | 3 | No danger |
| 09:00 | 4.8 | Caution |
| 10:00 | 6.3 | Danger |
| 11:00 | 7.5 | Danger |
| 12:00 | 8 | Serious danger |
| 13:00 | 6.6 | Danger |
| 14:00 | 3 | No danger |
| 15:00 | 2.2 | No danger |
| 16:00 | 4.1 | Caution |
| 17:00 | 2.3 | No danger |
| 18:00 | 0.9 | No danger |
| 19:00 | 0.1 | No danger |
| 20:00 | 0 | No danger |
| 21:00 | 0 | No danger |
| 22:00 | 0 | No danger |
| 23:00 | 0 | No danger |
| Skin type | Time to burn |
|---|---|
| I · always burns, never tans | 17 min |
| II · burns easily | 21 min |
| III · burns sometimes | 29 min |
| IV · rarely burns | 38 min |
| V · brown skin | 50 min |
| VI · deeply pigmented | 1 h 23 min |
Next 7 days · daily peak
Frequently asked
Is the UV index dangerous in Tokyo today?
Yes. UV in Tokyo is forecast to reach 3 or higher from 08:01 to 16:36 local time today, peaking at 8.
What time is UV highest in Tokyo?
UV is highest in Tokyo at around 12:00 local time today, reaching 8.
How long can unprotected skin stay out in Tokyo today?
At today's peak of 8, fair skin (Fitzpatrick type II) with no sunscreen burns in about 21 min. Darker skin types take longer. See the table above for every type.
Does the UV index in Tokyo change with the seasons?
Tokyo sees the widest UV swing of the year of any latitude band: a sharp summer peak around June and July, and a winter trough around December and January where midday UV can sit near zero for weeks at a time.
Nearby cities
Forecasts and elevation from Open-Meteo. The second UV opinion contains modified Copernicus Atmosphere Monitoring Service (CAMS) information; neither the European Commission nor ECMWF is responsible for how it is used here.
uvlevel.net gives general sun-safety guidance, not medical advice. Photosensitising medication, skin conditions, infants and a history of skin cancer all call for stricter limits than shown here.