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Last Updated 28 minutes ago
The hourly San Antonio, TX UV Index forecast for Wednesday, August 20th, 2025.
Last Updated 14 hours ago
The UV index forecast for the next five days in San Antonio, TX has no days reaching the extreme level and 3 days reaching the high or very high levels. The peak UV intensity in San Antonio over the next five days will be 10.7 on Friday, August 22nd at 2:00 pm.
The UV index forecast for Wednesday, August 20th in San Antonio, TX is below.
Time | UV Index | Risk |
---|---|---|
4am | 0 |
Low |
5am | 0 |
Low |
6am | 0 |
Low |
7am | 0 |
Low |
8am | 0.3 |
Low |
9am | 1.3 |
Low |
10am | 3.3 |
Moderate |
11am | 6.1 |
High |
12pm | 8.7 |
Very High |
1pm | 10.4 |
Very High |
2pm | 10.6 |
Very High |
3pm | 9.2 |
Very High |
4pm | 6.2 |
High |
5pm | 1.8 |
Low |
6pm | 1 |
Low |
7pm | 0.4 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Thursday, August 21st in San Antonio, TX 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 |
Low |
8am | 0.3 |
Low |
9am | 1.3 |
Low |
10am | 3.3 |
Moderate |
11am | 5.4 |
Moderate |
12pm | 4.9 |
Moderate |
1pm | 6.4 |
High |
2pm | 6.1 |
High |
3pm | 4.3 |
Moderate |
4pm | 1.5 |
Low |
5pm | 2.4 |
Low |
6pm | 1.2 |
Low |
7pm | 0.2 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Friday, August 22nd in San Antonio, TX 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 |
Low |
8am | 0.3 |
Low |
9am | 1.3 |
Low |
10am | 3.4 |
Moderate |
11am | 6.2 |
High |
12pm | 8.9 |
Very High |
1pm | 10.6 |
Very High |
2pm | 10.7 |
Very High |
3pm | 9.2 |
Very High |
4pm | 6.5 |
High |
5pm | 3.7 |
Moderate |
6pm | 1.3 |
Low |
7pm | 0.3 |
Low |
8pm | 0 |
Low |
9pm | 0 |
Low |
10pm | 0 |
Low |
11pm | 0 |
Low |
The UV index forecast for Saturday, August 23rd in San Antonio, TX 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 |
Low |