UV Index for St. Louis, MO

Current St. Louis UV Index

0 (Low)

Last Updated 15 minutes ago

Hourly St. Louis UV Index

The hourly St. Louis, MO UV Index forecast for Wednesday, April 30th, 2025.

5 Day Hourly St. Louis UV Index Forecast

Last Updated 8 hours ago

The UV index forecast for the next five days in St. Louis, MO has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in St. Louis over the next five days will be 8.3 on Thursday, May 1st at 1:00 pm.

The UV index forecast for Wednesday, April 30th in St. Louis, MO is below.

Time UV Index Risk
10pm 0
Low
11pm 0
Low

The UV index forecast for Thursday, May 1st 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 0.2
Low
8am 0.5
Low
9am 0.8
Low
10am 3.9
Moderate
11am 5.7
Moderate
12pm 7.5
High
1pm 8.3
Very High
2pm 4.8
Moderate
3pm 0.6
Low
4pm 4
Moderate
5pm 2.2
Low
6pm 0.9
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Friday, May 2nd 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 0.2
Low
8am 0.8
Low
9am 2.2
Low
10am 3.7
Moderate
11am 5.4
Moderate
12pm 7.2
High
1pm 8
Very High
2pm 7.3
High
3pm 3
Moderate
4pm 1
Low
5pm 2
Low
6pm 0.7
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Saturday, May 3rd 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 0.2
Low
8am 0.8
Low
9am 2.1
Low
10am 3.9
Moderate
11am 5.8
Moderate
12pm 7.3
High
1pm 7.9
High
2pm 7.4
High
3pm 6
High
4pm 4.1
Moderate
5pm 2.2
Low
6pm 0.9
Low
7pm 0.2
Low
8pm 0
Low
9pm 0
Low
10pm 0
Low
11pm 0
Low

The UV index forecast for Sunday, May 4th 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 0.2
Low
View Historical UV Index Data