Today | Weather | Monday, December 29, 2025

Weather in Round Rock, Texas

11:13 PM
Now
Rainy Weather
45° F
Feels Like 37°
Precipitation 44 %
Wind 9 mph
Humidity 36 %
Today
Rainy Weather
Day 45°
Night 34°
Precipitation 49 %
Wind 8 mph

Round Rock Weather Forecast Updated

23 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (December 29, 2024)
Cloudy Weather

Day

73°

Night

52°

Wind

6 mph

UV Index

3

Precipitation

0 %

Air Quality in Round Rock

NOW
35 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.96 µg/m³
PM10 2.4 µg/m³
O3 0.038 ppm
NO2 2.1 ppb
SO2 0.3 ppb
CO 0.14 ppm
NH3 0.64 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)
PM2.50.96 µg/m³
PM102.4 µg/m³
O373.72 µg/m³
NO23.94 µg/m³
SO20.81 µg/m³
CO155.2 µg/m³
NH30.64 µg/m³
NO0 µg/m³