Today | Weather | Friday, September 25, 2026

Weather in San Antonio, Texas

09:09 AM
Now
Cloudy Weather
79° F
Feels Like 90°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 2
Humidity 86 %
Today
Cloudy Weather
Day 97°
Night 75°
Precipitation 1 %
Wind 7 mph
UV Index (0 - 11+) 7

San Antonio Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 25, 2025)
Cloudy Weather

Day

95°

Night

66°

Wind

6 mph

UV Index

60

Precipitation

25 %

Air Quality in San Antonio

NOW
29 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 4.84 µg/m³
PM10 9.85 µg/m³
O3 0.032 ppm
NO2 1 ppb
SO2 0.1 ppb
CO 0.13 ppm
NH3 0.43 µg/m³
NO 0.07 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)
PM2.5 – 4.84 µg/m³
PM10 – 9.85 µg/m³
O3 – 62.14 µg/m³
NO2 – 1.93 µg/m³
SO2 – 0.24 µg/m³
CO – 147.96 µg/m³
NH3 – 0.43 µg/m³
NO – 0.07 µg/m³