Today | Weather | Monday, June 15, 2026
Active Weather Warnings

Weather in San Antonio, Texas

02:47 AM
Now
Rainy Weather
75° F
Feels Like 81°
Precipitation 65 %
Wind 7 mph
Humidity 97 %
Today
Sunny with a Chance of Thunderstorms
Day 82°
Night 72°
Precipitation 99 %
Wind 7 mph
UV Index (0 - 11+) 4

San Antonio Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (June 15, 2025)
Sunny with a Chance of Thunderstorms

Day

97°

Night

77°

Wind

11 mph

UV Index

11

Precipitation

86 %

Air Quality in San Antonio

NOW
14 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.2 µg/m³
PM10 3.04 µg/m³
O3 0.015 ppm
NO2 0.5 ppb
SO2 0.1 ppb
CO 0.10 ppm
NH3 0.34 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.52.2 µg/m³
PM103.04 µg/m³
O328.8 µg/m³
NO21.01 µg/m³
SO20.18 µg/m³
CO108.87 µg/m³
NH30.34 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for San Antonio

Severe Future Possible

Flood Watch

Flood Watch issued June 14 at 9:31PM CDT until June 16 at 7:00PM CDT by NWS Austin/San Antonio TX
Jun 14, 9:31 PM Jun 16, 7:00 PM
WHAT: Flooding caused by excessive rainfall continues to be
possible.

WHERE: A portion of south central Texas, including the following
counties, Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet,
Caldwell, Comal, De Witt, Dimmit, Edwards, Fayette, Frio,
Gillespie, Gonzales, Guadalupe, Hays, Karnes, Kendall, Kerr,
Kinney, Lavaca, Lee, Llano, Maverick, Medina, Real, Travis,
Uvalde, Val Verde, Williamson, Wilson and Zavala.

WHEN: Through Tuesday evening.

IMPACTS: There is a potential for life threatening flooding
somewhere in the watch area. Excessive runoff may result in
flooding of rivers, creeks, streams, and other low-lying and
flood-prone locations. Creeks and streams may rise out of their
banks. Low-water crossings may be flooded.

ADDITIONAL DETAILS:
- Very humid tropical air and a stalling front will result in
heavy rain. Isolated pockets with rain totals of 8 inches or
more are possible with rain rates that could exceed 2 to 3
inches per hour at times.
- http://www.weather.gov/safety/flood
+ Read More
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Updated: Jun 15, 1:47 AM Source: NWS Alert