Hourly Weather | Today Thursday, December 11, 2025
Round Rock, Texas
8 AM
Sunny Weather
39°
Feels Like 43°
0
Humidity: 74%
Wind: 5 mph
UV Index: 1
9 AM
Sunny Weather
45°
Feels Like 48°
0
Humidity: 64%
Wind: 5 mph
UV Index: 2
10 AM
Sunny Weather
52°
Feels Like 55°
0
Humidity: 49%
Wind: 6 mph
UV Index: 3
11 AM
Sunny Weather
61°
Feels Like 63°
0
Humidity: 31%
Wind: 7 mph
UV Index: 3
12 PM
Sunny Weather
64°
Feels Like 66°
0
Humidity: 25%
Wind: 7 mph
UV Index: 3
1 PM
Sunny Weather
66°
Feels Like 68°
0
Humidity: 22%
Wind: 8 mph
UV Index: 3
2 PM
Sunny Weather
68°
Feels Like 70°
0
Humidity: 21%
Wind: 8 mph
UV Index: 3
3 PM
Sunny Weather
70°
Feels Like 70°
0
Humidity: 20%
Wind: 8 mph
UV Index: 2
4 PM
Sunny Weather
68°
Feels Like 66°
0
Humidity: 23%
Wind: 8 mph
UV Index: 1
5 PM
Sunny Weather
64°
Feels Like 63°
0
Humidity: 26%
Wind: 7 mph
UV Index: 0
6 PM
Night
63°
Feels Like 61°
0
Humidity: 32%
Wind: 7 mph
UV Index: 0
7 PM
Cloudy Night
61°
Feels Like 57°
0
Humidity: 36%
Wind: 7 mph
UV Index: 0
8 PM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 42%
Wind: 7 mph
UV Index: 0
9 PM
Cloudy Night
55°
Feels Like 54°
0
Humidity: 46%
Wind: 7 mph
UV Index: 0
10 PM
Cloudy Night
55°
Feels Like 52°
0
Humidity: 49%
Wind: 7 mph
UV Index: 0
11 PM
Cloudy Night
54°
Feels Like 50°
0
Humidity: 55%
Wind: 7 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

8 AM
23 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.53 µg/m³
  • PM10: 8.12 µg/m³
  • O3: 0.018 ppm
  • NO2: 10.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 AM
23 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.61 µg/m³
  • PM10: 8.42 µg/m³
  • O3: 0.019 ppm
  • NO2: 10.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.22 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM
23 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.97 µg/m³
  • PM10: 7.75 µg/m³
  • O3: 0.024 ppm
  • NO2: 8 ppb
  • SO2: 0.7 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.93 µg/m³
  • PM10: 7.72 µg/m³
  • O3: 0.027 ppm
  • NO2: 7.1 ppb
  • SO2: 0.9 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

12 PM
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.13 µg/m³
  • PM10: 7.84 µg/m³
  • O3: 0.029 ppm
  • NO2: 6.5 ppb
  • SO2: 1.1 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM
39 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.11 µg/m³
  • PM10: 7.28 µg/m³
  • O3: 0.042 ppm
  • NO2: 3.8 ppb
  • SO2: 1.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM
43 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.55 µg/m³
  • PM10: 8.85 µg/m³
  • O3: 0.046 ppm
  • NO2: 2.8 ppb
  • SO2: 1.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 PM
45 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 7.68 µg/m³
  • PM10: 10.19 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.6 ppb
  • SO2: 1.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 PM
43 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.08 µg/m³
  • PM10: 11.9 µg/m³
  • O3: 0.047 ppm
  • NO2: 4.6 ppb
  • SO2: 1.7 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM
44 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.68 µg/m³
  • PM10: 13.91 µg/m³
  • O3: 0.038 ppm
  • NO2: 10 ppb
  • SO2: 1.5 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
50 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.09 µg/m³
  • PM10: 15.75 µg/m³
  • O3: 0.029 ppm
  • NO2: 15.7 ppb
  • SO2: 1.3 ppb
  • CO: 0.26 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.52 µg/m³
  • PM10: 17.64 µg/m³
  • O3: 0.024 ppm
  • NO2: 18.5 ppb
  • SO2: 1.1 ppb
  • CO: 0.29 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.75 µg/m³
  • PM10: 19.24 µg/m³
  • O3: 0.021 ppm
  • NO2: 18.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.30 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.52 µg/m³
  • PM10: 20.2 µg/m³
  • O3: 0.020 ppm
  • NO2: 17.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.30 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.84 µg/m³
  • PM10: 20.51 µg/m³
  • O3: 0.020 ppm
  • NO2: 15.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.29 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 PM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.97 µg/m³
  • PM10: 20.53 µg/m³
  • O3: 0.021 ppm
  • NO2: 13.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.27 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.