Today | Weather | Thursday, June 25, 2026

Weather in Round Rock, Texas

10:16 PM
Now
Cloudy Night
82° F
Feels Like 88°
Precipitation 0 %
Wind 12 mph
Humidity 73 %
Today
Cloudy Night
Day 90°
Night 75°
Precipitation 1 %
Wind 10 mph

Round Rock Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (June 25, 2025)
Sunny with a Chance of Thunderstorms

Day

90°

Night

73°

Wind

7 mph

UV Index

12

Precipitation

40 %

Air Quality in Round Rock

NOW
21 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.3 µg/m³
PM10 6.62 µg/m³
O3 0.023 ppm
NO2 1.3 ppb
SO2 0.5 ppb
CO 0.09 ppm
NH3 0.4 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)
PM2.52.3 µg/m³
PM106.62 µg/m³
O344.66 µg/m³
NO22.45 µg/m³
SO21.23 µg/m³
CO103.95 µg/m³
NH30.4 µg/m³
NO0 µg/m³