UV Index Today in San Antonio, Texas (TX)

Wednesday, November 4, 2026 -11:16 AM CST (GMT-6)

The UV Index in San Antonio, Texas (TX) right now is 4.4. This reading was last updated at 11:00 AM CST, about 16 minutes ago. The UV Index at12:00 PM CST, in about 43 minutes from now, is expected to be 5.6.

The maximum UV Index today in San Antonio is expected to be 5.6 at 12:00 PM CST,43 minutes from now. The maximum UV Index tomorrow is expected to be 3.5 at 1:00 PM CST.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

November 4
5.6
12:00 PM CST
High

Tomorrow

November 5
3.5
1:00 PM CST
Moderate

UV Index Today Hourly

November 4

UV levels in San Antonio, Texas (TX) are projected to top out at 5.6 today, hitting High risk near 12:00 PM CST.

02468107 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PMCentral Standard Time (CST, GMT-6)Now: 11:16 AM00.31.22.74.45.65.64.631.40.40
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

November 5

Sun intensity in San Antonio, Texas (TX) is at its highest tomorrow at 1:00 PM CST, registering UV Index 3.5 (Moderate risk).

02468107 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PMCentral Standard Time (CST, GMT-6)00.212.53.43.43.52.20.80.40.10
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

November 3, 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 AM0.3
Low
10:00 AM0.8
Low
11:00 AM1.1
Low
12:00 PM1.5
Low
1:00 PM3.9
Moderate
2:00 PM4.6
Moderate
3:00 PM3
Moderate
4:00 PM1.4
Low
5:00 PM0.4
Low
6:00 PM0
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

November 4, 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 AM0.3
Low
9:00 AM1.2
Low
10:00 AM2.7
Moderate
11:00 AM4.4
Moderate
12:00 PM5.6
High
1:00 PM5.6
High
2:00 PM4.6
Moderate
3:00 PM3
Moderate
4:00 PM1.4
Low
5:00 PM0.4
Low
6:00 PM0
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

November 5, 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 AM0.2
Low
9:00 AM1
Low
10:00 AM2.5
Moderate
11:00 AM3.4
Moderate
12:00 PM3.4
Moderate
1:00 PM3.5
Moderate
2:00 PM2.2
Low
3:00 PM0.8
Low
4:00 PM0.4
Low
5:00 PM0.1
Low
6:00 PM0
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

November 6, 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 AM0.3
Low
9:00 AM1.1
Low
10:00 AM2.6
Moderate
11:00 AM4.2
Moderate
12:00 PM5.3
Moderate
1:00 PM5.2
Moderate
2:00 PM4.4
Moderate
3:00 PM2.8
Moderate
4:00 PM1.2
Low
5:00 PM0.3
Low
6:00 PM0
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

November 7, 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 AM0.2
Low
9:00 AM1
Low
10:00 AM2.4
Low
11:00 AM4
Moderate
12:00 PM4.8
Moderate
1:00 PM4.7
Moderate
2:00 PM3.9
Moderate
3:00 PM2.4
Low
4:00 PM1.1
Low
5:00 PM0.3
Low
6:00 PM0
Low
7:00 PM0
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)