UV Index in Calgary, Canada

Last updated: June 2, 2025

In Calgary, Canada, awareness of the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding the UV levels helps residents enjoy outdoor activities safely while minimizing the risk of skin damage due to harmful ultraviolet radiation. With its Dfc climate, Calgary experiences unique weather patterns that can lead to unexpected spikes in UV exposure, especially during the summer months when indexes can soar to 8 around midday. By staying informed about the UV Index, Calgarians can take proactive steps to protect themselves and fully enjoy the stunning Alberta outdoors.

Hourly UV Index in Calgary

The UV Index today starts off mild, peaking at 1 at 7:00 AM and gradually rising as the sun climbs higher in the sky. By 9:00 AM, it reaches 3, marking the beginning of a sun-soaked day. As the clock strikes 12:00 PM, prepare for the highest point of the day at 7, followed closely by a peak of 8 from 1:00 PM to 2:00 PM. After this intense stretch, the UV levels begin to dip, returning to a more manageable 4 by 5:00 PM and gently fading to 2 by the time the sun sets at 7:00 PM. It's a great reminder to stay protected during those peak hours when the UV rays are strongest!

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:002low45 min
09:003moderate30 min
10:004moderate30 min
11:006high25 min
12:007high25 min
13:008very high15 min
14:008very high15 min
15:007high25 min
16:006high25 min
17:004moderate30 min
18:003moderate30 min
19:002low45 min

Monthly UV Index Trends in Calgary

Throughout the year, the UV Index experiences notable fluctuations, indicating varying levels of sun exposure risk. High-risk months typically occur from April to August, with the UV Index reaching a peak of 9 in July. During these months, outdoor enthusiasts should exercise caution, as the burn time reduces to as little as 15 minutes under the sun. In contrast, the winter months of January, November, and December pose a lower risk, characterized by a UV Index of 2 or lower, allowing for longer exposure times of up to 45 minutes without significant risk. Visitors and residents are advised to check the UV Index daily, particularly during the high-risk months, and to take protective measures such as wearing sunscreen, hats, and sunglasses to ensure safe sun exposure.

Monthly Maximum UV Index for Calgary, Canada

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Calgary. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec234688986421
Data source: Statistical UV Index data for Calgary, 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 Calgary UV Index with Other Canada Cities

The table above highlights how UV exposure in Calgary compares to other major locations across Canada. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.
Calgary's solar exposure compared to other cities in Canada. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
Edmonton UVI235677876421
Calgary234688987421
Montreal UVI245799887532
Ottawa UVI245899887532
Toronto UVI245899997532