Hourly Weather | Today Thursday, July 16, 2026
Active Weather Warnings
Round Rock, Texas
1 AM
Cloudy Weather
77°
Feels Like 84°
25
Humidity: 93%
UV Index: 0
Wind: 7 mph
2 AM
Stormy Weather
75°
Feels Like 79°
56
Humidity: 96%
UV Index: 0
Wind: 7 mph
3 AM
Stormy Weather
75°
Feels Like 82°
49
Humidity: 96%
UV Index: 0
Wind: 7 mph
4 AM
Cloudy Weather
75°
Feels Like 82°
49
Humidity: 95%
UV Index: 0
Wind: 7 mph
5 AM
Cloudy Weather
75°
Feels Like 82°
16
Humidity: 97%
UV Index: 0
Wind: 7 mph
6 AM
Cloudy Weather
75°
Feels Like 82°
16
Humidity: 99%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
75°
Feels Like 84°
17
Humidity: 99%
UV Index: 0
Wind: 6 mph
8 AM
Cloudy Weather
75°
Feels Like 88°
20
Humidity: 99%
UV Index: 1
Wind: 7 mph
9 AM
Cloudy Weather
79°
Feels Like 90°
20
Humidity: 95%
UV Index: 2
Wind: 8 mph
10 AM
Cloudy Weather
81°
Feels Like 93°
20
Humidity: 89%
UV Index: 2
Wind: 8 mph
11 AM
Cloudy Weather
82°
Feels Like 97°
20
Humidity: 82%
UV Index: 4
Wind: 9 mph
12 PM
Cloudy Weather
84°
Feels Like 99°
20
Humidity: 75%
UV Index: 6
Wind: 9 mph
1 PM
Cloudy Weather
88°
Feels Like 100°
25
Humidity: 70%
UV Index: 7
Wind: 9 mph
2 PM
Stormy Weather
88°
Feels Like 95°
51
Humidity: 68%
UV Index: 3
Wind: 9 mph
3 PM
Cloudy Weather
90°
Feels Like 99°
47
Humidity: 63%
UV Index: 3
Wind: 9 mph
4 PM
Cloudy Weather
90°
Feels Like 99°
35
Humidity: 62%
UV Index: 3
Wind: 9 mph
5 PM
Cloudy Weather
90°
Feels Like 97°
19
Humidity: 61%
UV Index: 2
Wind: 9 mph
6 PM
Cloudy Weather
88°
Feels Like 95°
19
Humidity: 62%
UV Index: 1
Wind: 9 mph
7 PM
Cloudy Weather
86°
Feels Like 91°
15
Humidity: 66%
UV Index: 1
Wind: 9 mph
8 PM
Cloudy Weather
84°
Feels Like 90°
8
Humidity: 70%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Weather
82°
Feels Like 90°
8
Humidity: 76%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Weather
81°
Feels Like 86°
8
Humidity: 83%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Weather
79°
Feels Like 84°
8
Humidity: 87%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
14 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.82 µg/m³
  • PM10: 6.39 µg/m³
  • O3: 0.015 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

2 AM
13 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.75 µg/m³
  • PM10: 5.82 µg/m³
  • O3: 0.014 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

3 AM
13 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.65 µg/m³
  • PM10: 5.01 µg/m³
  • O3: 0.014 ppm
  • NO2: 1.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

4 AM
13 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.61 µg/m³
  • PM10: 4.59 µg/m³
  • O3: 0.014 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

5 AM
12 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.63 µg/m³
  • PM10: 4.36 µg/m³
  • O3: 0.013 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

6 AM
12 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.72 µg/m³
  • PM10: 4.29 µg/m³
  • O3: 0.013 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

7 AM
12 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 2.81 µg/m³
  • PM10: 4.24 µg/m³
  • O3: 0.011 ppm
  • NO2: 2.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.9 µg/m³
  • PM10: 4.26 µg/m³
  • O3: 0.010 ppm
  • NO2: 3.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.95 µg/m³
  • PM10: 4.31 µg/m³
  • O3: 0.010 ppm
  • NO2: 3.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

10 AM
12 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 2.82 µg/m³
  • PM10: 4.06 µg/m³
  • O3: 0.011 ppm
  • NO2: 3 ppb
  • SO2: 0.4 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.44 µg/m³
  • PM10: 3.43 µg/m³
  • O3: 0.015 ppm
  • NO2: 2.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.92 µg/m³
  • PM10: 2.64 µg/m³
  • O3: 0.018 ppm
  • NO2: 1.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.44 µg/m³
  • PM10: 1.98 µg/m³
  • O3: 0.021 ppm
  • NO2: 1.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.15 µg/m³
  • PM10: 1.6 µg/m³
  • O3: 0.023 ppm
  • NO2: 1 ppb
  • SO2: 0.5 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.07 µg/m³
  • PM10: 1.51 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.01 µg/m³
  • PM10: 1.45 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

5 PM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.93 µg/m³
  • PM10: 1.36 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

6 PM
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.83 µg/m³
  • PM10: 1.22 µg/m³
  • O3: 0.022 ppm
  • NO2: 2.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

7 PM
19 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.78 µg/m³
  • PM10: 1.14 µg/m³
  • O3: 0.021 ppm
  • NO2: 2 ppb
  • SO2: 0.4 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

8 PM
19 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.76 µg/m³
  • PM10: 1.1 µg/m³
  • O3: 0.020 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

9 PM
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.84 µg/m³
  • PM10: 1.3 µg/m³
  • O3: 0.020 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

10 PM
18 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.02 µg/m³
  • PM10: 1.75 µg/m³
  • O3: 0.019 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

11 PM
17 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.26 µg/m³
  • PM10: 2.42 µg/m³
  • O3: 0.018 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Round Rock

Severe Future Possible

Flood Watch

Flood Watch issued July 15 at 1:05PM CDT until July 16 at 7:00PM CDT by NWS Austin/San Antonio TX
Jul 15, 1:05 PM Jul 16, 7:00 PM
WHAT: Flooding and flash flooding caused by excessive rainfall
continues to be possible.

WHERE: A portion of south central Texas, including the following
counties, Bandera, Bexar, Blanco, Burnet, Comal, Dimmit, Edwards,
Frio, Gillespie, Guadalupe, Hays, Kendall, Kerr, Kinney, Llano,
Maverick, Medina, Real, Travis, Uvalde, Val Verde, Williamson and
Zavala.

WHEN: Through Thursday evening.

IMPACTS: There is a potential for life threatening flooding
somewhere in the watch area. Considerable to locally catastrophic
flash flooding impacts are likely for the southern Edwards
Plateau, Rio Grande, western Hill Country, and US 90 corridor west
of San Antonio. Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Flooding may occur
in poor drainage and urban areas. Catastrophic impacts are
possible downstream of the heaviest rains. Low-water crossings may
be flooded. Extensive street flooding and flooding of creeks and
rivers are possible.

ADDITIONAL DETAILS:
- Intense rainfall rates and compounding effects from multiple
rounds of storms will maintain a dangerous flash flood threat
through Thursday. Additional rain amounts of 2 to 6 inches
are possible within the Flood Watch area with isolated
amounts of 10 to 15 inches possible in the Rio Grande Plains,
southern Edwards Plateau, western Hill Country, and US 90
corridor west of San Antonio.
- http://www.weather.gov/safety/flood
+ Read More
You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Updated: Jul 15, 11:22 PM Source: NWS Alert