Today | Weather | Sunday, December 14, 2025

Weather in Round Rock, Texas

07:16 AM
Now
Cloudy Weather
45° F
Feels Like 34°
Precipitation 2 %
Wind 16 mph
Humidity 82 %
Today
Cloudy Weather
Day 48°
Night 30°
Precipitation 5 %
Wind 15 mph
UV Index (0 - 11+) 2

Round Rock Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 14, 2024)
Rainy Night

Day

81°

Night

64°

Wind

4 mph

Precipitation

86 %

Air Quality in Round Rock

NOW
58 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 15.82 µg/m³
PM10 17.04 µg/m³
O3 0.029 ppm
NO2 2.7 ppb
SO2 0.4 ppb
CO 0.21 ppm
NH3 0.32 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.515.82 µg/m³
PM1017.04 µg/m³
O356.23 µg/m³
NO25.13 µg/m³
SO21.07 µg/m³
CO240.05 µg/m³
NH30.32 µg/m³
NO0 µg/m³