Today | Weather | Thursday, March 12, 2026

Weather in San Antonio, Texas

08:39 AM
Now
Sunny Weather
48° F
Feels Like 43°
Precipitation 0 %
Wind 15 mph
UV Index (0 - 11+) 2
Humidity 48 %
Today
Sunny Weather
Day 70°
Night 45°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 7

San Antonio Weather Forecast Updated

26 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 12, 2025)
Cloudy Weather

Day

91°

Night

54°

Wind

11 mph

UV Index

7

Precipitation

0 %

Air Quality in San Antonio

NOW
48 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.87 µg/m³
PM10 2.57 µg/m³
O3 0.051 ppm
NO2 0.9 ppb
SO2 0.3 ppb
CO 0.13 ppm
NH3 2.98 µg/m³
NO 0.04 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)
PM2.51.87 µg/m³
PM102.57 µg/m³
O3100.93 µg/m³
NO21.73 µg/m³
SO20.7 µg/m³
CO149.1 µg/m³
NH32.98 µg/m³
NO0.04 µg/m³