Hourly Weather | Today Tuesday, August 4, 2026
Active Weather Warnings
Brownsville, Texas
1 PM
Cloudy Weather
99°
Feels Like 108°
30
Humidity: 48%
UV Index: 11
Wind: 18 mph
2 PM
Cloudy Weather
99°
Feels Like 109°
20
Humidity: 47%
UV Index: 11
Wind: 18 mph
3 PM
Cloudy Weather
97°
Feels Like 104°
20
Humidity: 48%
UV Index: 8
Wind: 20 mph
4 PM
Cloudy Weather
97°
Feels Like 100°
20
Humidity: 49%
UV Index: 5
Wind: 20 mph
5 PM
Cloudy Weather
93°
Feels Like 99°
20
Humidity: 52%
UV Index: 3
Wind: 18 mph
6 PM
Cloudy Weather
93°
Feels Like 99°
20
Humidity: 55%
UV Index: 2
Wind: 17 mph
7 PM
Cloudy Weather
90°
Feels Like 95°
13
Humidity: 60%
UV Index: 1
Wind: 16 mph
8 PM
Cloudy Weather
88°
Feels Like 93°
0
Humidity: 66%
UV Index: 0
Wind: 15 mph
9 PM
Cloudy Night
86°
Feels Like 93°
0
Humidity: 75%
UV Index: 0
Wind: 14 mph
10 PM
Cloudy Night
84°
Feels Like 93°
0
Humidity: 80%
UV Index: 0
Wind: 12 mph
11 PM
Cloudy Night
84°
Feels Like 93°
0
Humidity: 83%
UV Index: 0
Wind: 12 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.09 µg/m³
  • PM10: 7.71 µg/m³
  • O3: 0.023 ppm
  • NO2: 0.1 ppb
  • SO2: 0.2 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: 3.83 µg/m³
  • PM10: 7.56 µg/m³
  • O3: 0.023 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.68 µg/m³
  • PM10: 7.83 µg/m³
  • O3: 0.023 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.5 µg/m³
  • PM10: 8.05 µg/m³
  • O3: 0.022 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.32 µg/m³
  • PM10: 8.21 µg/m³
  • O3: 0.021 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.24 µg/m³
  • PM10: 8.49 µg/m³
  • O3: 0.020 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.13 µg/m³
  • PM10: 8.45 µg/m³
  • O3: 0.019 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.14 µg/m³
  • PM10: 8.74 µg/m³
  • O3: 0.018 ppm
  • NO2: 0.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.31 µg/m³
  • PM10: 9.3 µg/m³
  • O3: 0.018 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.41 µg/m³
  • PM10: 9.46 µg/m³
  • O3: 0.018 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.09 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: 3.4 µg/m³
  • PM10: 9.32 µg/m³
  • O3: 0.018 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Brownsville

Moderate Expected Observed

Special Weather Statement

Special Weather Statement issued August 4 at 9:22AM CDT by NWS Brownsville TX
Aug 4, 9:22 AM Aug 4, 7:15 PM
The combination of hot temperatures and humidity will produce
heat index values between 105 and 110 degrees for several hours
this afternoon into this evening. A few locations may briefly
experience heat index values above 111 degrees.

If spending time outside today, drink plenty of water, wear light
weight and light colored clothing, and take frequent breaks from
the heat. Young children and pets should never be left unattended
in vehicles.
Updated: Aug 4, 11:19 AM Source: NWS Alert