Hourly Weather | Today Tuesday, March 17, 2026
Active Weather Warnings
Huntsville, Alabama
5 AM
Cloudy Night
28°
Feels Like 25°
0
Humidity: 69%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Night
27°
Feels Like 25°
0
Frost Risk: 76%
Humidity: 69%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
27°
Feels Like 21°
0
Frost Risk: 76%
Humidity: 72%
UV Index: 0
Wind: 6 mph
8 AM
Cloudy Weather
32°
Feels Like 27°
0
Humidity: 52%
UV Index: 1
Wind: 8 mph
9 AM
Cloudy Weather
34°
Feels Like 30°
0
Humidity: 44%
UV Index: 2
Wind: 9 mph
10 AM
Cloudy Weather
36°
Feels Like 34°
0
Humidity: 39%
UV Index: 3
Wind: 9 mph
11 AM
Cloudy Weather
37°
Feels Like 37°
0
Humidity: 34%
UV Index: 4
Wind: 10 mph
12 PM
Cloudy Weather
39°
Feels Like 41°
0
Humidity: 31%
UV Index: 5
Wind: 10 mph
1 PM
Cloudy Weather
43°
Feels Like 43°
0
Humidity: 29%
UV Index: 6
Wind: 10 mph
2 PM
Cloudy Weather
43°
Feels Like 43°
0
Humidity: 28%
UV Index: 5
Wind: 12 mph
3 PM
Cloudy Weather
43°
Feels Like 43°
0
Humidity: 27%
UV Index: 4
Wind: 12 mph
4 PM
Cloudy Weather
45°
Feels Like 41°
0
Humidity: 27%
UV Index: 3
Wind: 12 mph
5 PM
Cloudy Weather
43°
Feels Like 39°
0
Humidity: 29%
UV Index: 2
Wind: 9 mph
6 PM
Cloudy Weather
43°
Feels Like 39°
0
Humidity: 31%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Night
39°
Feels Like 37°
0
Humidity: 36%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
39°
Feels Like 37°
0
Humidity: 41%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
37°
Feels Like 37°
0
Humidity: 45%
UV Index: 0
Wind: 4 mph
10 PM
Cloudy Night
36°
Feels Like 36°
0
Humidity: 49%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
34°
Feels Like 36°
0
Humidity: 52%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 0.7 µg/m³
  • PM10: 1.73 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.92 µg/m³
  • PM10: 1.92 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.15 µg/m³
  • PM10: 2.14 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.35 µg/m³
  • PM10: 2.36 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.49 µg/m³
  • PM10: 2.52 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.69 µg/m³
  • PM10: 2.67 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.2 ppb
  • SO2: 0.8 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.79 µg/m³
  • PM10: 2.59 µg/m³
  • O3: 0.052 ppm
  • NO2: 1 ppb
  • SO2: 0.9 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.87 µg/m³
  • PM10: 2.6 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.8 ppb
  • SO2: 0.8 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.

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

Pollutant Concentrations:

  • PM2.5: 2.01 µg/m³
  • PM10: 2.74 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.7 ppb
  • SO2: 0.8 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.

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

Pollutant Concentrations:

  • PM2.5: 1.94 µg/m³
  • PM10: 2.69 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.6 ppb
  • SO2: 0.8 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.

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

Pollutant Concentrations:

  • PM2.5: 1.57 µg/m³
  • PM10: 2.32 µg/m³
  • O3: 0.058 ppm
  • NO2: 0.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.3 µg/m³
  • PM10: 2.07 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.39 µg/m³
  • PM10: 2.5 µg/m³
  • O3: 0.056 ppm
  • NO2: 1.1 ppb
  • SO2: 0.5 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.

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

Pollutant Concentrations:

  • PM2.5: 1.64 µg/m³
  • PM10: 3.4 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.88 µg/m³
  • PM10: 4.31 µg/m³
  • O3: 0.045 ppm
  • NO2: 4.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.22 µg/m³
  • PM10: 5.56 µg/m³
  • O3: 0.041 ppm
  • NO2: 5.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.85 µg/m³
  • PM10: 7.39 µg/m³
  • O3: 0.037 ppm
  • NO2: 6.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.47 µg/m³
  • PM10: 9.19 µg/m³
  • O3: 0.035 ppm
  • NO2: 7.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.01 µg/m³
  • PM10: 10.67 µg/m³
  • O3: 0.034 ppm
  • NO2: 8.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

Weather Alerts and Warnings for Huntsville

Severe Future Possible

Freeze Watch

Freeze Watch issued March 15 at 2:54AM CDT until March 17 at 9:00AM CDT by NWS Huntsville AL
Mar 16, 8:00 PM Mar 17, 9:00 AM
WHAT: For the Wind Advisory, southwest winds 15 to 25 mph with
gusts up to 45 mph expected. For the Freeze Watch, sub-freezing
temperatures as low as 22 is forecast.

WHERE: Portions of north central, northeast, and northwest
Alabama.

WHEN: For the Wind Advisory, from 1 PM this afternoon to 7 AM CDT
Monday. For the Freeze Watch, from Monday evening through Tuesday
morning.

IMPACTS: Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
Frost and freeze conditions could kill crops, other sensitive
vegetation and possibly damage unprotected outdoor plumbing.
+ Read More
Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. Take steps now to protect tender plants from the cold.
Updated: Mar 15, 12:38 PM Source: NWS Alert
Moderate Expected Likely

Freeze Warning

Freeze Warning issued March 16 at 9:59PM CDT until March 17 at 10:00AM CDT by NWS Huntsville AL
Mar 16, 9:59 PM Mar 17, 10:00 AM
WHAT: For the first Freeze Warning, sub-freezing temperatures as
low as 23. For the second Freeze Warning, sub-freezing
temperatures as low as 25.

WHERE: All counties in northern Alabama.

WHEN: For the first Freeze Warning, until 10 AM CDT Tuesday. For
the second Freeze Warning, from 9 PM Tuesday to 9 AM CDT Wednesday.

IMPACTS: Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
+ Read More
Take steps now to protect tender plants from the cold.
Updated: Mar 17, 3:18 AM Source: NWS Alert