UV Index in Alta, Iowa, United States

· America/Chicago

3.2
Moderate · clear-sky maximum Tuesday, October 20, 2026

At solar noon (01:06:00 PM) the sun reaches 36.8° above the horizon in Alta. Without clouds, that corresponds to a maximum UV index of about 3.2 (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 Alta, next 14 days

DateSun at noonClear-sky maxForecast max
36.8° 3.2 Moderate —
36.5° 3.1 Moderate —
36.1° 3.1 Moderate —
35.8° 3.0 Moderate —
35.4° 2.9 Low —
35.1° 2.9 Low —
34.7° 2.8 Low —
34.4° 2.8 Low —
34.1° 2.7 Low —
33.7° 2.6 Low —
33.4° 2.6 Low —
33.1° 2.5 Low —
32.7° 2.5 Low —
32.4° 2.4 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.

☀️ Sun Protection Pick
Banana Boat Sport Ultra SPF 100 Sunscreen
★★★★★ ★★★★★ 4.8 · 11,180 ratings

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

About Alta

Alta is located in Buena Vista County, Iowa, in the United States. It sits at an elevation of 454 meters and covers an area of 2.8 square kilometers. The municipality has existed since 1872 and reached a population of 2,087 people by 2020. Among the notable features within the city is the Danish Lutheran Church.

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