Today | Weather | Sunday, April 26, 2026

Weather in Round Rock, Texas

01:22 PM
Now
Cloudy Weather
82° F
Feels Like 90°
Precipitation 0 %
Wind 9 mph
UV Index (0 - 11+) 3
Humidity 70 %
Today
Cloudy Weather
Day 88°
Night 73°
Precipitation 2 %
Wind 8 mph
UV Index (0 - 11+) 3

Round Rock Weather Forecast Updated

47 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (April 26, 2025)
Sunny with a Chance of Thunderstorms

Day

84°

Night

70°

Wind

11 mph

UV Index

9

Precipitation

40 %

Air Quality in Round Rock

NOW
23 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.78 µg/m³
PM10 3.99 µg/m³
O3 0.025 ppm
NO2 1.3 ppb
SO2 0.5 ppb
CO 0.11 ppm
NH3 0.98 µg/m³
NO 0.22 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)
PM2.52.78 µg/m³
PM103.99 µg/m³
O348.41 µg/m³
NO22.37 µg/m³
SO21.4 µg/m³
CO128.91 µg/m³
NH30.98 µg/m³
NO0.22 µg/m³