Hourly Weather | Today Tuesday, June 9, 2026
Watertown, South Dakota
9 PM
Cloudy Weather
82°
Feels Like 81°
32
Humidity: 58%
UV Index: 0
Wind: 15 mph
10 PM
Cloudy Night
81°
Feels Like 79°
36
Humidity: 65%
UV Index: 0
Wind: 15 mph
11 PM
Cloudy Weather
77°
Feels Like 75°
49
Humidity: 71%
UV Index: 0
Wind: 15 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.41 µg/m³
  • PM10: 3.82 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 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: 3.61 µg/m³
  • PM10: 3.92 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.54 µg/m³
  • PM10: 3.77 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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