UV Index for St. Louis, MO

Current St. Louis UV Index

0 (Low)

Last Updated 41 minutes ago

Hourly St. Louis UV Index

The hourly St. Louis, MO UV Index forecast for Sunday, June 15th, 2025.

5 Day Hourly St. Louis UV Index Forecast

Last Updated 17 hours ago

The UV index forecast for the next five days in St. Louis, MO has no days reaching the extreme level and 2 days reaching the high or very high levels. The peak UV intensity in St. Louis over the next five days will be 10.5 on Tuesday, June 17th at 1:00 pm.

The UV index forecast for Sunday, June 15th in St. Louis, MO is below.

Time UV Index Risk
7am 0.4
Low
8am 1.3
Low
9am 3
Moderate
10am 5.2
Moderate
11am 7.6
High
12pm 9.4
Very High
1pm 10.1
Very High
2pm 9.5
Very High
3pm 7.8
High
4pm 5.5
Moderate
5pm 3.2
Moderate
6pm 1.5
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Monday, June 16th in St. Louis, MO is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0.3
Low
8am 0.8
Low
9am 2.3
Low
10am 2.9
Low
11am 2.6
Low
12pm 1.2
Low
1pm 0.8
Low
2pm 0.9
Low
3pm 0.9
Low
4pm 0.6
Low
5pm 0.4
Low
6pm 0.2
Low
7pm 0.1
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Tuesday, June 17th in St. Louis, MO is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0.4
Low
8am 1.4
Low
9am 2.8
Low
10am 5.2
Moderate
11am 7.8
High
12pm 9.6
Very High
1pm 10.5
Very High
2pm 9.8
Very High
3pm 8.1
Very High
4pm 5.8
Moderate
5pm 3.4
Moderate
6pm 1.6
Low
7pm 0.5
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Wednesday, June 18th in St. Louis, MO is below.

Time UV Index Risk
12am 0
Low
1am 0
Low
2am 0
Low
3am 0
Low
4am 0
Low
5am 0
Low
6am 0
Low
7am 0.4
Low
View Historical UV Index Data