UV Index in Boise, Idaho, United States

· America/Boise

3.0
Moderate · clear-sky maximum Tuesday, October 20, 2026

At solar noon (01:29:39 PM) the sun reaches 35.9° above the horizon in Boise. Without clouds, that corresponds to a maximum UV index of about 3.0 (moderate). 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 Boise, next 14 days

DateSun at noonClear-sky maxForecast max
35.9° 3.0 Moderate —
35.5° 2.9 Low —
35.1° 2.9 Low —
34.8° 2.8 Low —
34.4° 2.7 Low —
34.1° 2.7 Low —
33.8° 2.6 Low —
33.4° 2.6 Low —
33.1° 2.5 Low —
32.8° 2.5 Low —
32.4° 2.4 Low —
32.1° 2.4 Low —
31.8° 2.3 Low —
31.5° 2.3 Low —

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 Boise 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 Boise or discover the best light for photos during the golden hour in Boise.

About Boise

Boise is the capital city of Idaho and serves as the seat of Ada County in the United States. Situated at an elevation of 824 meters, the city has existed as a municipality since 1863 and sits along the Boise River. As of 2020, the population was 235,684. Within the city limits, notable features include Boise State University, the Idaho Central Arena, and Albertsons Stadium. The urban area covers 216,713.7 square kilometers, and the city maintains a twin town relationship with Guernica. Local infrastructure and landmarks also include the Cathedral of St. John the Evangelist, ExtraMile Arena, Ahavath Beth Israel, the Elks Temple, and The Egyptian Theatre.

AI-assisted description based on geographic data and editorial notes.