Hourly Weather Forecast for Longview, Texas

Hourly Weather | Today › Tuesday, July 21, 2026

Active Weather Warnings

Heat Advisory

Longview, Texas

3 AM

79°

Feels Like 82°

Humidity: 83%

UV Index: 0

Wind: 6 mph

4 AM

75°

Feels Like 81°

Humidity: 81%

UV Index: 0

Wind: 6 mph

5 AM

75°

Feels Like 79°

Humidity: 84%

UV Index: 0

Wind: 6 mph

6 AM

75°

Feels Like 79°

Humidity: 87%

UV Index: 0

Wind: 6 mph

7 AM

77°

Feels Like 82°

Humidity: 80%

UV Index: 1

Wind: 5 mph

8 AM

81°

Feels Like 88°

Humidity: 71%

UV Index: 2

Wind: 6 mph

9 AM

84°

Feels Like 93°

Humidity: 65%

UV Index: 3

Wind: 6 mph

10 AM

90°

Feels Like 100°

Humidity: 57%

UV Index: 5

Wind: 6 mph

11 AM

91°

Feels Like 106°

Humidity: 50%

UV Index: 8

Wind: 6 mph

12 PM

95°

Feels Like 108°

Humidity: 44%

UV Index: 11

Wind: 6 mph

1 PM

99°

Feels Like 111°

Humidity: 39%

UV Index: 11

Wind: 6 mph

2 PM

100°

Feels Like 111°

Humidity: 35%

UV Index: 11

Wind: 6 mph

3 PM

100°

Feels Like 111°

Humidity: 34%

UV Index: 8

Wind: 6 mph

4 PM

102°

Feels Like 109°

Humidity: 33%

UV Index: 5

Wind: 6 mph

5 PM

100°

Feels Like 108°

Humidity: 34%

UV Index: 3

Wind: 6 mph

6 PM

100°

Feels Like 106°

Humidity: 37%

UV Index: 2

Wind: 6 mph

7 PM

99°

Feels Like 102°

Humidity: 40%

UV Index: 1

Wind: 6 mph

8 PM

95°

Feels Like 100°

Humidity: 45%

UV Index: 0

Wind: 5 mph

9 PM

91°

Feels Like 99°

Humidity: 53%

UV Index: 0

Wind: 4 mph

10 PM

88°

Feels Like 97°

Humidity: 61%

UV Index: 0

Wind: 4 mph

11 PM

84°

Feels Like 91°

Humidity: 68%

UV Index: 0

Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

3 AM

22 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.57 µg/m³
PM₁₀: 6.48 µg/m³
O₃: 0.023 ppm
NO₂: 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.

4 AM

20 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.46 µg/m³
PM₁₀: 6.3 µg/m³
O₃: 0.021 ppm
NO₂: 0.9 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

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

5 AM

18 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.3 µg/m³
PM₁₀: 6.05 µg/m³
O₃: 0.020 ppm
NO₂: 0.9 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

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

6 AM

17 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.17 µg/m³
PM₁₀: 5.84 µg/m³
O₃: 0.018 ppm
NO₂: 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.

7 AM

15 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.06 µg/m³
PM₁₀: 5.68 µg/m³
O₃: 0.017 ppm
NO₂: 1.1 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

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

8 AM

14 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.94 µg/m³
PM₁₀: 5.52 µg/m³
O₃: 0.015 ppm
NO₂: 1.2 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

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

9 AM

14 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.84 µg/m³
PM₁₀: 5.44 µg/m³
O₃: 0.015 ppm
NO₂: 1.1 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

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

10 AM

17 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 2.83 µg/m³
PM₁₀: 5.52 µg/m³
O₃: 0.018 ppm
NO₂: 0.9 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 AM

25 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.18 µg/m³
PM₁₀: 6.13 µg/m³
O₃: 0.027 ppm
NO₂: 0.8 ppb
SO₂: 0.6 ppb
CO: 0.08 ppm

Health Recommendations:

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

12 PM

30 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 3.89 µg/m³
PM₁₀: 6.95 µg/m³
O₃: 0.033 ppm
NO₂: 0.6 ppb
SO₂: 0.8 ppb
CO: 0.08 ppm

Health Recommendations:

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

1 PM

35 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.61 µg/m³
PM₁₀: 7.72 µg/m³
O₃: 0.037 ppm
NO₂: 0.5 ppb
SO₂: 0.8 ppb
CO: 0.08 ppm

Health Recommendations:

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

2 PM

40 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.54 µg/m³
PM₁₀: 7.31 µg/m³
O₃: 0.043 ppm
NO₂: 0.3 ppb
SO₂: 0.6 ppb
CO: 0.08 ppm

Health Recommendations:

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

3 PM

39 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.33 µg/m³
PM₁₀: 6.89 µg/m³
O₃: 0.042 ppm
NO₂: 0.2 ppb
SO₂: 0.5 ppb
CO: 0.07 ppm

Health Recommendations:

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

4 PM

39 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.35 µg/m³
PM₁₀: 6.81 µg/m³
O₃: 0.042 ppm
NO₂: 0.2 ppb
SO₂: 0.4 ppb
CO: 0.07 ppm

Health Recommendations:

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

5 PM

39 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.46 µg/m³
PM₁₀: 6.93 µg/m³
O₃: 0.042 ppm
NO₂: 0.2 ppb
SO₂: 0.4 ppb
CO: 0.08 ppm

Health Recommendations:

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

6 PM

38 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.59 µg/m³
PM₁₀: 7.06 µg/m³
O₃: 0.041 ppm
NO₂: 0.3 ppb
SO₂: 0.4 ppb
CO: 0.08 ppm

Health Recommendations:

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

7 PM

38 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.68 µg/m³
PM₁₀: 7.13 µg/m³
O₃: 0.041 ppm
NO₂: 0.4 ppb
SO₂: 0.4 ppb
CO: 0.08 ppm

Health Recommendations:

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

8 PM

31 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.74 µg/m³
PM₁₀: 7.17 µg/m³
O₃: 0.033 ppm
NO₂: 0.7 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

22 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 4.81 µg/m³
PM₁₀: 7.24 µg/m³
O₃: 0.024 ppm
NO₂: 1.1 ppb
SO₂: 0.2 ppb
CO: 0.08 ppm

Health Recommendations:

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

10 PM

20 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 4.86 µg/m³
PM₁₀: 7.35 µg/m³
O₃: 0.020 ppm
NO₂: 1.4 ppb
SO₂: 0.2 ppb
CO: 0.09 ppm

Health Recommendations:

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

11 PM

20 AQI

Good air quality Dominant pollutant: PM_2.5

Details

Pollutant Concentrations:

PM_2.5: 4.82 µg/m³
PM₁₀: 7.3 µg/m³
O₃: 0.017 ppm
NO₂: 1.6 ppb
SO₂: 0.2 ppb
CO: 0.09 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Longview

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 20 at 10:20PM CDT until July 21 at 8:00PM CDT by NWS Shreveport LA

Jul 20, 10:20 PM → Jul 21, 8:00 PM

WHAT: Heat index values up to 109.

WHERE: Portions of northwest Louisiana and east and northeast
Texas.

WHEN: Until 8 PM CDT Tuesday.

IMPACTS: Hot temperatures and high humidity may cause heat
illnesses.

+ Read More

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Updated: Jul 21, 1:21 AM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Longview

Heat Advisory

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