UV Index in Fort Collins

Real-time UV forecast & tanning weather

Current Conditions

Loading live weather data...
0
Low
UV Index
🌡️
16°C
Temperature
⛅
Partly cloudy
Conditions
☀️
Peak Tanning Window 1PM • UV 9

Hourly UV Forecast

☀️ Excellent tanning conditions • 10AM–6PM • 27°C • 15 km/h 🌬️
0
6AM
1
7AM
2
8AM
3
9AM
5
10AM
7
11AM
8
12PM
9
1PM
9
2PM
8
3PM
7
4PM
5
5PM
3
6PM
2
7PM
1
8PM
0
9PM
Low 0–2 Moderate 3–5 High 6–7 Very High 8–10 Extreme 11+

16-Day UV Forecast

9
Mon 1
Excellent
8
Tue 2
Excellent
7
Wed 3
Excellent
8
Thu 4
Excellent
9
Fri 5
Excellent
8
Sat 6
Excellent
8
Sun 7
Excellent
8
Mon 8
Excellent
9
Tue 9
Excellent
8
Wed 10
Excellent
8
Thu 11
Excellent
8
Fri 12
Excellent
8
Sat 13
Excellent
8
Sun 14
Excellent
7
Mon 15
Excellent
0
Tue 16
Good

Location & Climate

In Fort Collins, UV rises from 1 in January to 8 in June, with peak tanning months being June, July, August. Expect the strongest sun between late spring and early fall.

North America spans a wide UV range from subtropical Florida to northern Canada. Seasons strongly influence tanning potential — summer months offer the best conditions across most of the continent.

SPF 15-30 is adequate during summer tanning sessions. In winter, UV levels are typically too low to require sunscreen for tanning purposes, though daily SPF is always good skincare practice.

Tanning Tips

Fort Collins has a distinct tanning season from April to October. Winter UV is too low for effective tanning.

Weather data by Open-Meteo (CC BY 4.0)

Monthly UV Index in Fort Collins

Average daily maximum UV index by month

Jan
1
Feb
1
Mar
3
Apr
5
May
6
Jun
8
Jul
8
Aug
8
Sep
6
Oct
5
Nov
3
Dec
1
Low Moderate High Very High Extreme

Best Months to Tan in Fort Collins

Based on average UV levels, the best months for tanning in Fort Collins are:

April Good May Good June Great July Great August Great September Good October Good

Rating based on average monthly UV index

Related Guides

Tanning in UV 7-8 → How to Tan Quicker → Backyard Tanning Tips → Melanin-Boosting Foods →

Tanning Tools & Calculators

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Tanning Time Calculator

Calculate your ideal tanning time based on skin type and UV index

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Sunburn Calculator

Find out how long until you burn based on your skin type and current UV

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Skin Type Quiz

Discover your Fitzpatrick skin type and get personalized tanning advice

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Tanning Routine Creator

Build a personalized tanning plan based on your skin, UV, and experience

Frequently Asked Questions

What is the UV index in Fort Collins right now?
The current UV index in Fort Collins is shown in the live weather section above. UV levels change throughout the day, typically peaking between 11 AM and 2 PM local time.
What is the best month to tan in Fort Collins?
The best months for tanning in Fort Collins are April, May, June, July, August, September, October, when average UV levels reach 5 or higher.
How long should I tan in Fort Collins?
Tanning time depends on your skin type and the current UV index. For a moderate UV of 7, a person with Skin Type III (medium complexion) can safely tan for about 21 minutes per session. Use our Tanning Calculator for personalized recommendations.
Is it safe to tan in UV index 8?
UV index 8 is classified as Very High. Very High — avoid prolonged sun exposure. Short tanning sessions with SPF 50+ recommended.
When is the peak UV time in Fort Collins?
UV levels in Fort Collins typically peak between 11:00 AM and 2:00 PM local time. The exact peak depends on the season, cloud cover, and altitude.

UV Index in Nearby Cities

8
Estes Park
Avg. Peak UV
› 8
Cheyenne
Avg. Peak UV
› 8
Boulder
Avg. Peak UV
› 10
Denver
Avg. Peak UV
› 8
Laramie
Avg. Peak UV
› 9
Aurora
Avg. Peak UV
›

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