12.8
Extreme · clear-sky maximum
Wednesday, October 21, 2026
At solar noon (11:56:27 AM) the sun reaches 78.5° above the horizon in Siak Sri Indrapura. Without clouds, that corresponds to a maximum UV index of about 12.8 (extreme). Clouds usually lower the real value; snow, sand, water and altitude can raise it.
☀️ Sun Safety: When the UV index is high, protect yourself with sunscreen, shade, and a hat. Values of 6 or more indicate increased sunburn risk!
UV index in Siak Sri Indrapura, next 14 days
| Date | Sun at noon | Clear-sky max | Forecast max |
|---|---|---|---|
| 78.5° | 12.8 Extreme | — | |
| 78.2° | 12.7 Extreme | — | |
| 77.8° | 12.7 Extreme | — | |
| 77.5° | 12.7 Extreme | — | |
| 77.1° | 12.6 Extreme | — | |
| 76.8° | 12.6 Extreme | — | |
| 76.4° | 12.5 Extreme | — | |
| 76.1° | 12.5 Extreme | — | |
| 75.8° | 12.4 Extreme | — | |
| 75.4° | 12.4 Extreme | — | |
| 75.1° | 12.3 Extreme | — | |
| 74.8° | 12.3 Extreme | — | |
| 74.5° | 12.3 Extreme | — | |
| 74.2° | 12.2 Extreme | — |
Clear-sky values are calculated from the sun's height at solar noon (cloud-free sky, average ozone). Forecast values from Open-Meteo include clouds and load in your browser.
☀️ Sun Protection Pick
Banana Boat Sport Ultra SPF 100 Sunscreen
High UV today? Sport sunscreen with SPF 100 stays on through sweat — essential for long outdoor activities.
View on Amazon →*Affiliate link — we may earn a small commission at no extra cost to you.
The UV index in Siak Sri Indrapura measures the intensity of ultraviolet radiation reaching the ground.
Values below 3 are considered low risk, while 6 and above require sun protection such as sunscreen, sunglasses, and shade.
The clear-sky value shows how strong the sun can get on each day; the forecast shows what is expected with clouds.
See today's sunrise and sunset times for Siak Sri Indrapura
or discover the best light for photos during the golden hour in Siak Sri Indrapura.
About Siak Sri Indrapura
AI-assisted description based on geographic data and editorial notes.