UV Index in St. Louis
Real-time UV forecast & tanning weather
Current Conditions
Loading live weather data...Weather data by Open-Meteo (CC BY 4.0)
Monthly UV Index in St. Louis
Average daily maximum UV index by month
| Jan | 3 | Moderate |
| Feb | 4 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 8 | Very High |
| Jun | 9 | Very High |
| Jul | 9 | Very High |
| Aug | 9 | Very High |
| Sep | 8 | Very High |
| Oct | 6 | High |
| Nov | 5 | Moderate |
| Dec | 4 | Moderate |
Best Months to Tan in St. Louis
Based on average UV levels, the best months for tanning in St. Louis are:
March Good
April Good
May Great
June Excellent
July Excellent
August Excellent
September Great
October Good
November Good
Rating based on average monthly UV index
Tanning Guide for St. Louis
Location & Climate
St. Louis provides a favorable tanning season from March through November, with high UV intensity during summer, though heat and humidity are common. Utilize the open spaces of Forest Park during the peak sun hours for your tanning sessions.
Tanning Tips
St. Louis has a distinct tanning season from March to November. Winter UV is too low for effective tanning.
Related Guides
Frequently Asked Questions
What is the UV index in St. Louis right now?
The current UV index in St. Louis 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 St. Louis?
The best months for tanning in St. Louis are March, April, May, June, July, August, September, October, November, when average UV levels reach 5 or higher.
How long should I tan in St. Louis?
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 9?
UV index 9 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 St. Louis?
UV levels in St. Louis typically peak between 11:00 AM and 2:00 PM local time. The exact peak depends on the season, cloud cover, and altitude.
Get Personalized Tanning Sessions
Tan AI calculates your perfect tanning time based on real-time UV, your skin type, and goals.
