Today | Weather | Tuesday, May 5, 2026

Weather in San Antonio, Texas

06:35 PM
Now
Cloudy Weather
90° F
Feels Like 93°
Precipitation 1 %
Wind 9 mph
UV Index (0 - 11+) 1
Humidity 57 %
Today
Cloudy Weather
Day 91°
Night 75°
Precipitation 4 %
Wind 8 mph
UV Index (0 - 11+) 5

San Antonio Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 5, 2025)
Stormy Weather

Day

79°

Night

72°

Wind

11 mph

UV Index

5

Precipitation

98 %

Air Quality in San Antonio

NOW
36 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.86 µg/m³
PM10 7.7 µg/m³
O3 0.039 ppm
NO2 0.4 ppb
SO2 0.2 ppb
CO 0.11 ppm
NH3 2.12 µg/m³
NO 0.05 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)
PM2.53.86 µg/m³
PM107.7 µg/m³
O376.11 µg/m³
NO20.7 µg/m³
SO20.43 µg/m³
CO129.13 µg/m³
NH32.12 µg/m³
NO0.05 µg/m³