Hourly Weather | Today Wednesday, March 18, 2026
Roswell, Georgia
1 PM
Cloudy Weather
48°
Feels Like 59°
0
Humidity: 27%
UV Index: 4
Wind: 4 mph
2 PM
Cloudy Weather
52°
Feels Like 61°
7
Humidity: 26%
UV Index: 4
Wind: 2 mph
3 PM
Cloudy Weather
54°
Feels Like 61°
7
Humidity: 26%
UV Index: 4
Wind: 4 mph
4 PM
Cloudy Weather
54°
Feels Like 57°
7
Humidity: 26%
UV Index: 3
Wind: 5 mph
5 PM
Cloudy Weather
54°
Feels Like 55°
7
Humidity: 27%
UV Index: 2
Wind: 6 mph
6 PM
Cloudy Weather
54°
Feels Like 55°
7
Humidity: 29%
UV Index: 1
Wind: 5 mph
7 PM
Cloudy Weather
54°
Feels Like 52°
5
Humidity: 33%
UV Index: 0
Wind: 5 mph
8 PM
Cloudy Night
50°
Feels Like 48°
0
Humidity: 38%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 45%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
43°
Feels Like 43°
0
Humidity: 52%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
39°
Feels Like 39°
0
Humidity: 60%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.95 µg/m³
  • PM10: 4.65 µg/m³
  • O3: 0.058 ppm
  • NO2: 1.5 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.

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

Pollutant Concentrations:

  • PM2.5: 3.04 µg/m³
  • PM10: 4.74 µg/m³
  • O3: 0.059 ppm
  • NO2: 1.3 ppb
  • SO2: 1.1 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: 3.13 µg/m³
  • PM10: 4.87 µg/m³
  • O3: 0.061 ppm
  • NO2: 1.1 ppb
  • SO2: 1.1 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.

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

Pollutant Concentrations:

  • PM2.5: 3.32 µg/m³
  • PM10: 5.11 µg/m³
  • O3: 0.062 ppm
  • NO2: 0.9 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.

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

Pollutant Concentrations:

  • PM2.5: 3.64 µg/m³
  • PM10: 5.52 µg/m³
  • O3: 0.063 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.

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

Pollutant Concentrations:

  • PM2.5: 3.73 µg/m³
  • PM10: 6.68 µg/m³
  • O3: 0.057 ppm
  • NO2: 1.6 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.

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

Pollutant Concentrations:

  • PM2.5: 3.85 µg/m³
  • PM10: 8.58 µg/m³
  • O3: 0.048 ppm
  • NO2: 3.2 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
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.16 µg/m³
  • PM10: 10.48 µg/m³
  • O3: 0.041 ppm
  • NO2: 5 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.47 µg/m³
  • PM10: 12.04 µg/m³
  • O3: 0.037 ppm
  • NO2: 5.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.75 µg/m³
  • PM10: 13.01 µg/m³
  • O3: 0.034 ppm
  • NO2: 6 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 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: 5.07 µg/m³
  • PM10: 13.4 µg/m³
  • O3: 0.032 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.