Hourly Weather | Today Tuesday, January 13, 2026
St. Peters, Missouri
6 PM
Rainy Weather
61°
Feels Like 55°
48
Humidity: 42%
Wind: 11 mph
UV Index: 0
7 PM
Cloudy Weather
57°
Feels Like 54°
40
Humidity: 46%
Wind: 9 mph
UV Index: 0
8 PM
Cloudy Weather
55°
Feels Like 52°
34
Humidity: 52%
Wind: 11 mph
UV Index: 0
9 PM
Cloudy Weather
54°
Feels Like 48°
40
Humidity: 58%
Wind: 11 mph
UV Index: 0
10 PM
Rainy Weather
52°
Feels Like 43°
55
Humidity: 64%
Wind: 11 mph
UV Index: 0
11 PM
Cloudy Weather
50°
Feels Like 45°
47
Humidity: 68%
Wind: 11 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.88 µg/m³
  • PM10: 6.73 µg/m³
  • O3: 0.041 ppm
  • NO2: 2 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.89 µg/m³
  • PM10: 6.53 µg/m³
  • O3: 0.039 ppm
  • NO2: 2 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 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: 4.94 µg/m³
  • PM10: 6.26 µg/m³
  • O3: 0.037 ppm
  • NO2: 2 ppb
  • SO2: 0.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.96 µg/m³
  • PM10: 5.94 µg/m³
  • O3: 0.036 ppm
  • NO2: 2 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.57 µg/m³
  • PM10: 5.1 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 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: 3.98 µg/m³
  • PM10: 4.19 µg/m³
  • O3: 0.034 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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