Hourly Weather | Today Monday, September 21, 2026
Marietta, Georgia
3 PM
Sunny with a Chance of Thunderstorms
90°
Feels Like 93°
65
Humidity: 60%
UV Index: 2
Wind: 5 mph
4 PM
Cloudy Weather
88°
Feels Like 95°
49
Humidity: 59%
UV Index: 2
Wind: 5 mph
5 PM
Cloudy Weather
86°
Feels Like 93°
34
Humidity: 63%
UV Index: 2
Wind: 5 mph
6 PM
Cloudy Weather
84°
Feels Like 90°
34
Humidity: 60%
UV Index: 1
Wind: 5 mph
7 PM
Cloudy Weather
82°
Feels Like 84°
40
Humidity: 66%
UV Index: 0
Wind: 5 mph
8 PM
Stormy Weather
79°
Feels Like 81°
61
Humidity: 75%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
77°
Feels Like 81°
49
Humidity: 80%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
75°
Feels Like 79°
48
Humidity: 86%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
73°
Feels Like 77°
46
Humidity: 89%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.33 µg/m³
  • PM10: 3.7 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.71 µg/m³
  • PM10: 4.13 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.06 µg/m³
  • PM10: 4.54 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.44 µg/m³
  • PM10: 5.13 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.79 µg/m³
  • PM10: 5.82 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.09 µg/m³
  • PM10: 6.42 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.31 µg/m³
  • PM10: 6.82 µg/m³
  • O3: 0.033 ppm
  • NO2: 2.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.66 µg/m³
  • PM10: 7.26 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.04 µg/m³
  • PM10: 7.56 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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