UV Index Today in San Antonio, Texas (TX)

Wednesday, July 15, 2026 -11:14 AM CDT (GMT-5)

The UV Index in San Antonio, Texas (TX) right now is 1.8. This reading was last updated at 11:00 AM CDT, about 14 minutes ago. The UV Index at12:00 PM CDT, in about 45 minutes from now, is expected to be 3.6.

The maximum UV Index today in San Antonio is expected to be 5.3 at 1:00 PM CDT,1 hour and 45 minutes from now. The maximum UV Index tomorrow is expected to be 1.3 at 2:00 PM CDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

July 15
5.3
1:00 PM CDT
Moderate

Tomorrow

July 16
1.3
2:00 PM CDT
Low

UV Index Today Hourly

July 15

UV levels in San Antonio, Texas (TX) are projected to top out at 5.3 today, hitting Moderate risk near 1:00 PM CDT.

02468107 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMCentral Daylight Time (CDT, GMT-5)Now: 11:14 AM00.10.20.71.83.65.33.63.63.72.21.10.30
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

July 16

Sun intensity in San Antonio, Texas (TX) is at its highest tomorrow at 2:00 PM CDT, registering UV Index 1.3 (Low risk).

02468108 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMCentral Daylight Time (CDT, GMT-5)00.20.30.50.60.91.31.10.60.40.20.30
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

July 14, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.1
Low
9:00 AM0.2
Low
10:00 AM0.6
Low
11:00 AM1.3
Low
12:00 PM2
Low
1:00 PM1.7
Low
2:00 PM1.4
Low
3:00 PM1.6
Low
4:00 PM0.8
Low
5:00 PM0.4
Low
6:00 PM0.3
Low
7:00 PM0.2
Low
8:00 PM0.1
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

July 15, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.1
Low
9:00 AM0.2
Low
10:00 AM0.7
Low
11:00 AM1.8
Low
12:00 PM3.6
Moderate
1:00 PM5.3
Moderate
2:00 PM3.6
Moderate
3:00 PM3.6
Moderate
4:00 PM3.7
Moderate
5:00 PM2.2
Low
6:00 PM1.1
Low
7:00 PM0.3
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

July 16, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0
Low
9:00 AM0.2
Low
10:00 AM0.3
Low
11:00 AM0.5
Low
12:00 PM0.6
Low
1:00 PM0.9
Low
2:00 PM1.3
Low
3:00 PM1.1
Low
4:00 PM0.6
Low
5:00 PM0.4
Low
6:00 PM0.2
Low
7:00 PM0.3
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

July 17, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.4
Low
9:00 AM1.5
Low
10:00 AM3
Moderate
11:00 AM3.2
Moderate
12:00 PM3.4
Moderate
1:00 PM6.6
High
2:00 PM7.8
Very High
3:00 PM7.3
High
4:00 PM4.7
Moderate
5:00 PM2.6
Moderate
6:00 PM1.3
Low
7:00 PM0.3
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

July 18, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.4
Low
9:00 AM1.1
Low
10:00 AM2.1
Low
11:00 AM4.5
Moderate
12:00 PM8.7
Very High
1:00 PM9.5
Very High
2:00 PM10.5
Extreme
3:00 PM9.1
Very High
4:00 PM6.6
High
5:00 PM3.7
Moderate
6:00 PM1.5
Low
7:00 PM0.5
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low
Data Source: National Oceanic and Atmospheric Administration (NOAA)

Nearby Places

Maximum UV Index Today
Data Source: National Oceanic and Atmospheric Administration (NOAA)