UV Index Today in San Antonio, Texas (TX)

Friday, May 22, 2026 -1:39 PMCDT (GMT-5)

The UV Index in San Antonio, Texas (TX) right now is 9.2. This reading was last updated at 1:00 PM CDT, about 39 minutes ago. The UV Index at2:00 PM CDT, in about 20 minutes from now, is expected to be 9.2.

The maximum UV Index today in San Antonio was 9.2 at 1:00 PM CDT,39 minutes ago. The maximum UV Index tomorrow is expected to be 5.8 at 3:00 PM CDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

May 22
9.2
1:00 PM CDT
Very High

Tomorrow

May 23
5.8
3:00 PM CDT
High

UV Index Today Hourly

May 22

UV levels in San Antonio, Texas (TX) are projected to top out at 9.2 today, hitting Very High 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: 1:39 PM00.51.53.45.37.79.29.28.163.61.60.50
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

May 23

Sun intensity in San Antonio, Texas (TX) is at its highest tomorrow at 3:00 PM CDT, registering UV Index 5.8 (High risk).

02468107 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PMCentral Daylight Time (CDT, GMT-5)00.41.43.43.62.72.93.95.84.63.71.80.60
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

May 21, 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 AM0.8
Low
10:00 AM2.3
Low
11:00 AM4.1
Moderate
12:00 PM6.2
High
1:00 PM7.5
Very High
2:00 PM9.3
Very High
3:00 PM6.8
High
4:00 PM4.8
Moderate
5:00 PM2.8
Moderate
6:00 PM1.4
Low
7:00 PM0.5
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

May 22, 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 AM0.5
Low
9:00 AM1.5
Low
10:00 AM3.4
Moderate
11:00 AM5.3
Moderate
12:00 PM7.7
Very High
1:00 PM9.2
Very High
2:00 PM9.2
Very High
3:00 PM8.1
Very High
4:00 PM6
High
5:00 PM3.6
Moderate
6:00 PM1.6
Low
7:00 PM0.5
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

May 23, 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 AM1.4
Low
10:00 AM3.4
Moderate
11:00 AM3.6
Moderate
12:00 PM2.7
Moderate
1:00 PM2.9
Moderate
2:00 PM3.9
Moderate
3:00 PM5.8
High
4:00 PM4.6
Moderate
5:00 PM3.7
Moderate
6:00 PM1.8
Low
7:00 PM0.6
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

May 24, 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 AM0.5
Low
9:00 AM1.6
Low
10:00 AM3.4
Moderate
11:00 AM5.8
High
12:00 PM7.8
Very High
1:00 PM9.2
Very High
2:00 PM9.4
Very High
3:00 PM8.3
Very High
4:00 PM6.2
High
5:00 PM3.8
Moderate
6:00 PM1.8
Low
7:00 PM0.6
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

May 25, 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 AM0.5
Low
9:00 AM1.6
Low
10:00 AM3.5
Moderate
11:00 AM6
High
12:00 PM8.2
Very High
1:00 PM9.7
Very High
2:00 PM9.8
Very High
3:00 PM8.6
Very High
4:00 PM6.4
High
5:00 PM3.9
Moderate
6:00 PM1.8
Low
7:00 PM0.6
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)