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Today Hourly 7 days 30 days Air Quality
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Hourly Weather | Today › Tuesday, March 17, 2026
Active Weather Warnings
Lewisville, Texas
5 AM
Cloudy Night
36°
Feels Like 28°
0
Humidity: 49%
UV Index: 0
Wind: 8 mph
6 AM
Cloudy Night
36°
Feels Like 28°
0
Humidity: 49%
UV Index: 0
Wind: 9 mph
7 AM
Cloudy Night
37°
Feels Like 28°
0
Humidity: 48%
UV Index: 0
Wind: 9 mph
8 AM
Cloudy Weather
36°
Feels Like 30°
0
Humidity: 46%
UV Index: 1
Wind: 10 mph
9 AM
Cloudy Weather
39°
Feels Like 34°
0
Humidity: 43%
UV Index: 2
Wind: 12 mph
10 AM
Cloudy Weather
45°
Feels Like 41°
0
Humidity: 34%
UV Index: 3
Wind: 13 mph
11 AM
Cloudy Weather
50°
Feels Like 48°
0
Humidity: 28%
UV Index: 4
Wind: 13 mph
12 PM
Cloudy Weather
55°
Feels Like 54°
0
Humidity: 23%
UV Index: 6
Wind: 14 mph
1 PM
Cloudy Weather
57°
Feels Like 57°
0
Humidity: 20%
UV Index: 6
Wind: 15 mph
2 PM
Cloudy Weather
61°
Feels Like 61°
0
Humidity: 19%
UV Index: 6
Wind: 16 mph
3 PM
Cloudy Weather
64°
Feels Like 63°
0
Humidity: 18%
UV Index: 4
Wind: 18 mph
4 PM
Cloudy Weather
64°
Feels Like 63°
0
Humidity: 18%
UV Index: 3
Wind: 20 mph
5 PM
Cloudy Weather
66°
Feels Like 64°
0
Humidity: 18%
UV Index: 2
Wind: 18 mph
6 PM
Cloudy Weather
64°
Feels Like 63°
0
Humidity: 20%
UV Index: 1
Wind: 17 mph
7 PM
Cloudy Weather
63°
Feels Like 57°
0
Humidity: 22%
UV Index: 0
Wind: 16 mph
8 PM
Night
61°
Feels Like 55°
0
Humidity: 24%
UV Index: 0
Wind: 18 mph
9 PM
Night
57°
Feels Like 52°
0
Humidity: 27%
UV Index: 0
Wind: 17 mph
10 PM
Night
57°
Feels Like 50°
0
Humidity: 28%
UV Index: 0
Wind: 17 mph
11 PM
Night
55°
Feels Like 48°
0
Humidity: 30%
UV Index: 0
Wind: 17 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.75 µg/m³
  • PM10: 3.74 µg/m³
  • O3: 0.030 ppm
  • NO2: 2 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.77 µg/m³
  • PM10: 3.71 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.7 ppb
  • SO2: 0 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

7 AM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.76 µg/m³
  • PM10: 3.68 µg/m³
  • O3: 0.034 ppm
  • NO2: 1.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

8 AM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.74 µg/m³
  • PM10: 3.68 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

9 AM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.71 µg/m³
  • PM10: 3.68 µg/m³
  • O3: 0.038 ppm
  • NO2: 2 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.75 µg/m³
  • PM10: 3.74 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.52 µg/m³
  • PM10: 4.43 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.21 µg/m³
  • PM10: 5.06 µg/m³
  • O3: 0.053 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

1 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.64 µg/m³
  • PM10: 5.48 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

2 PM
72 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.23 µg/m³
  • PM10: 6 µg/m³
  • O3: 0.061 ppm
  • NO2: 0.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

3 PM
83 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.18 µg/m³
  • PM10: 5.94 µg/m³
  • O3: 0.064 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

4 PM
86 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.05 µg/m³
  • PM10: 5.81 µg/m³
  • O3: 0.065 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

5 PM
91 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.14 µg/m³
  • PM10: 5.93 µg/m³
  • O3: 0.067 ppm
  • NO2: 0.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

6 PM
91 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.18 µg/m³
  • PM10: 6 µg/m³
  • O3: 0.067 ppm
  • NO2: 0.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

7 PM
89 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.14 µg/m³
  • PM10: 5.98 µg/m³
  • O3: 0.066 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

8 PM
86 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5 µg/m³
  • PM10: 5.89 µg/m³
  • O3: 0.066 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

9 PM
85 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.76 µg/m³
  • PM10: 5.72 µg/m³
  • O3: 0.065 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

10 PM
83 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.41 µg/m³
  • PM10: 5.42 µg/m³
  • O3: 0.065 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

11 PM
78 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.87 µg/m³
  • PM10: 4.89 µg/m³
  • O3: 0.063 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Lewisville

Moderate Expected Likely

Freeze Warning

Freeze Warning issued March 17 at 2:03AM CDT until March 17 at 9:00AM CDT by NWS Fort Worth TX
Mar 17, 3:00 AM → Mar 17, 9:00 AM
WHAT: Sub-freezing temperatures as low as 24 expected.

WHERE: North and Central Texas

WHEN: Until 9 AM CDT this morning.

IMPACTS: Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.

ADDITIONAL DETAILS: Highly urban areas like DFW may hover just
above freezing overnight in some areas.
+ Read More
Take steps now to protect tender plants from the cold. Freeze Warnings are issued in the spring when a late-season freeze is expected after the growing season has begun. Frost and freeze conditions will damage unprotected vegetation that is sensitive to freezing temperatures.
Updated: Mar 17, 4:27 AM Source: NWS Alert

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