Today | Weather | Saturday, September 20, 2025

Weather in Round Rock, Texas

03:34 AM
Now
Cloudy Night
75° F
Feels Like 77°
Precipitation 0 %
Wind 6 mph
Humidity 84 %
Today
Sunny Weather
Day 97°
Night 73°
Precipitation 3 %
Wind 11
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Round Rock Weather Forecast Updated

Last updated on

Air quality in Round Rock

NOW
49 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 4.07 µg/m³
PM10 4.73 µg/m³
O₃ 34.19 ppb
NO₂ 2.37 ppb
SO₂ 0.50 ppb
CO 137.32 ppb
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide

Health Recommendations:

With this level of air quality, you have no limitations. Enjoy the outdoors