UV Index in Anchorage, United States

Last updated: May 3, 2025

In Anchorage, United States, staying aware of the UV Index is crucial for protecting your skin from harmful ultraviolet rays. Understanding UV levels helps prevent sunburn and promotes long-term skin health, especially as the sun’s intensity can vary throughout the day. Despite Anchorage's predominantly cool climate, its unique Dfc zone can lead to unexpected peaks in UV exposure, particularly during the summer months. With a daily maximum UV Index often reaching up to 5, it’s essential to take proper precautions to enjoy the beautiful Alaskan outdoors safely!

Hourly UV Index in Anchorage

As the day unfolds, the UV Index begins its ascent, showcasing a gradual increase in UV radiation. Starting from a low 1 at 07:00 AM, it remains mild until 09:00 AM, when it rises to 2. The intensity peaks at 12:00 PM, reaching a maximum of 5, where protective measures become crucial. Throughout the afternoon, from 1 PM to 3 PM, it maintains this elevated level, ensuring that sun safety is a top priority. As the sun begins to set, the UV Index drops back down, descending to 4 by 4 PM and gradually easing to 2 by 7 PM. Stay vigilant and protect your skin during the high UV hours!

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
Time	UVI	Category	Time to Burn
07:00	1	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	3	moderate	30 min
11:00	4	moderate	30 min
12:00	5	moderate	30 min
13:00	5	moderate	30 min
14:00	5	moderate	30 min
15:00	5	moderate	30 min
16:00	4	moderate	30 min
17:00	3	moderate	30 min
18:00	2	low	45 min
19:00	2	low	45 min

Monthly UV Index Trends in Anchorage

The UV Index experiences significant seasonal changes, with high-risk months identified from June to July, where the index peaks at 6 and 7, categorized as high exposure. During these months, the burn time decreases to just 25 minutes, emphasizing the need for protective measures. As spring approaches, particularly in March, the index rises from low to moderate levels (3 to 5), which means visitors should start to be vigilant about UV exposure. Conversely, from November to February, the UV Index remains low (1), allowing for more extended outdoor activities with minimal risk of sunburn—up to 45 minutes. Residents and visitors are advised to take appropriate sun protection measures such as wearing sunscreen, hats, and sunglasses, particularly during the high-risk summer months, while maintaining awareness of the UV levels year-round.

Monthly Maximum UV Index for Anchorage, United States

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Anchorage. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for Anchorage, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare Anchorage UV Index with Other United States Cities

The table above highlights how UV exposure in Anchorage compares to other major locations across United States. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Anchorage's solar exposure compared to other cities in United States. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Anchorage	1	1	3	4	5	6	7	5	4	2	1	1
Chicago UVI	3	4	6	8	9	10	10	9	8	6	4	2
Brooklyn UVI	3	5	6	8	10	10	9	9	8	6	4	2
New York City UVI	3	5	6	8	10	10	9	9	8	6	4	2
Los Angeles UVI	4	6	8	9	10	11	11	10	10	7	5	4
Houston UVI	5	8	9	11	11	12	12	11	10	9	7	5