UV Index in Rialma, Goiás, Brazil

· America/Sao Paulo

12.9
Extreme · clear-sky maximum Wednesday, October 21, 2026

At solar noon (12:03:00 PM) the sun reaches 85.5° above the horizon in Rialma. Without clouds, that corresponds to a maximum UV index of about 12.9 (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 Rialma, next 14 days

DateSun at noonClear-sky maxForecast max
85.5° 12.9 Extreme —
85.9° 12.9 Extreme —
86.2° 12.9 Extreme —
86.6° 12.9 Extreme —
86.9° 12.9 Extreme —
87.3° 12.9 Extreme —
87.6° 13.0 Extreme —
87.9° 13.0 Extreme —
88.3° 13.0 Extreme —
88.6° 13.0 Extreme —
88.9° 13.0 Extreme —
89.2° 13.0 Extreme —
89.6° 13.0 Extreme —
89.9° 13.0 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.

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The UV index in Rialma 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 Rialma or discover the best light for photos during the golden hour in Rialma.