Hourly Weather | Today Wednesday, March 18, 2026
Smyrna, Georgia
11 AM
Cloudy Weather
43°
Feels Like 54°
0
Humidity: 34%
UV Index: 4
Wind: 2 mph
12 PM
Cloudy Weather
46°
Feels Like 57°
0
Humidity: 29%
UV Index: 4
Wind: 2 mph
1 PM
Cloudy Weather
48°
Feels Like 59°
0
Humidity: 27%
UV Index: 4
Wind: 2 mph
2 PM
Cloudy Weather
50°
Feels Like 61°
0
Humidity: 25%
UV Index: 4
Wind: 2 mph
3 PM
Cloudy Weather
52°
Feels Like 61°
0
Humidity: 25%
UV Index: 4
Wind: 4 mph
4 PM
Cloudy Weather
52°
Feels Like 59°
0
Humidity: 24%
UV Index: 3
Wind: 4 mph
5 PM
Cloudy Weather
54°
Feels Like 55°
0
Humidity: 24%
UV Index: 2
Wind: 4 mph
6 PM
Cloudy Weather
55°
Feels Like 55°
0
Humidity: 25%
UV Index: 1
Wind: 4 mph
7 PM
Cloudy Weather
54°
Feels Like 52°
0
Humidity: 29%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
52°
Feels Like 50°
0
Humidity: 34%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
48°
Feels Like 48°
0
Humidity: 42%
UV Index: 0
Wind: 4 mph
10 PM
Night
46°
Feels Like 46°
0
Humidity: 48%
UV Index: 0
Wind: 4 mph
11 PM
Night
45°
Feels Like 45°
0
Humidity: 55%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 6.52 µg/m³
  • PM10: 13.79 µg/m³
  • O3: 0.033 ppm
  • NO2: 3.7 ppb
  • SO2: 0.7 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.56 µg/m³
  • PM10: 5.57 µg/m³
  • O3: 0.056 ppm
  • NO2: 1.9 ppb
  • SO2: 1.2 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
63 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.72 µg/m³
  • PM10: 4.26 µg/m³
  • O3: 0.058 ppm
  • NO2: 1.4 ppb
  • SO2: 1 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
66 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.86 µg/m³
  • PM10: 4.4 µg/m³
  • O3: 0.059 ppm
  • NO2: 1.2 ppb
  • SO2: 1 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
72 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.03 µg/m³
  • PM10: 4.63 µg/m³
  • O3: 0.061 ppm
  • NO2: 1 ppb
  • SO2: 0.9 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.

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

Pollutant Concentrations:

  • PM2.5: 3.3 µg/m³
  • PM10: 4.96 µg/m³
  • O3: 0.062 ppm
  • NO2: 0.9 ppb
  • SO2: 0.9 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.

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

Pollutant Concentrations:

  • PM2.5: 3.63 µg/m³
  • PM10: 5.38 µg/m³
  • O3: 0.063 ppm
  • NO2: 0.9 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.

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

Pollutant Concentrations:

  • PM2.5: 3.78 µg/m³
  • PM10: 6.53 µg/m³
  • O3: 0.057 ppm
  • NO2: 1.6 ppb
  • SO2: 0.7 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.

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

Pollutant Concentrations:

  • PM2.5: 3.92 µg/m³
  • PM10: 8.34 µg/m³
  • O3: 0.050 ppm
  • NO2: 3.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.41 µg/m³
  • PM10: 10.34 µg/m³
  • O3: 0.044 ppm
  • NO2: 5.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.97 µg/m³
  • PM10: 12.08 µg/m³
  • O3: 0.040 ppm
  • NO2: 6.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.47 µg/m³
  • PM10: 13.28 µg/m³
  • O3: 0.037 ppm
  • NO2: 6.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.84 µg/m³
  • PM10: 13.79 µg/m³
  • O3: 0.034 ppm
  • NO2: 6.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.19 ppm

Health Recommendations:

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