Unalaska, AK: Current UV Index and Hourly Forecast

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On this page, you can find the current UV Index and hourly 5 day UV Index forecast for Unalaska, Aleutians West Census Area, Alaska (AK). The Ultraviolet Index forecast, which measures the radiation from the sun that reaches the Earth's surface is updated daily.

UV Index Data sourced from the NOAA.

As of 10:59 PM AKDT on Saturday, May 17, 2025, the UV index in Unalaska, AK is at a low level of 0.1. At this time of the evening, the sun is about to set and there is very low exposure to UV radiation. The UV Index will drop to 0 at 11:00 PM and stay at 0 through the early morning hours until around 8:00 AM tomorrow.

As the day progresses tomorrow (May 18, 2025), the UV Index will rise to 0.1 between 8:00 AM - 9:00 AM, still considered low. The UV Index in Unalaska will continue to rise through the morning, reaching a moderate level of 2.8 between 2:00 PM - 3:00 PM. The UV Index will peak between 3:00 PM and 4:00 PM with a moderate reading of 3.2.

For the protection of your health against UV exposure, we highly recommended wearing sunglasses, generously applying broad-spectrum SPF 15+ strength sunscreen on exposed skin, covering the body with sun-protective clothing and a wide-brim hat, and reducing the time spent outdoors in the sun during peak hours.

After reaching its peak for the day, the UV Index will gradually decline through the afternoon and evening. It will return to moderate levels at 4:00 PM and then drop to low levels again from 6:00 PM onwards. As the day transitions into the night, the UV Index will drop back down to 0 at 11:00 PM.

Summary of Hourly UV Index Forecast for Today and Tomorrow in Unalaska, AK

Current UV Index in Nearby Cities

• Akutan, AK - 0.2