Hourly Weather | Today Tuesday, September 1, 2026
Brookings, South Dakota
11 AM
Cloudy Weather
75°
Feels Like 77°
7
Humidity: 59%
UV Index: 3
Wind: 7 mph
12 PM
Cloudy Weather
77°
Feels Like 81°
7
Humidity: 55%
UV Index: 4
Wind: 7 mph
1 PM
Cloudy Weather
79°
Feels Like 82°
11
Humidity: 52%
UV Index: 4
Wind: 7 mph
2 PM
Cloudy Weather
81°
Feels Like 82°
19
Humidity: 50%
UV Index: 4
Wind: 7 mph
3 PM
Cloudy Weather
81°
Feels Like 82°
19
Humidity: 50%
UV Index: 3
Wind: 7 mph
4 PM
Cloudy Weather
82°
Feels Like 84°
24
Humidity: 50%
UV Index: 2
Wind: 7 mph
5 PM
Cloudy Weather
81°
Feels Like 82°
43
Humidity: 54%
UV Index: 2
Wind: 7 mph
6 PM
Cloudy Weather
81°
Feels Like 81°
47
Humidity: 58%
UV Index: 1
Wind: 8 mph
7 PM
Sunny with a Chance of Thunderstorms
77°
Feels Like 73°
51
Humidity: 70%
UV Index: 0
Wind: 8 mph
8 PM
Sunny with a Chance of Thunderstorms
73°
Feels Like 70°
66
Humidity: 82%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Night
72°
Feels Like 70°
49
Humidity: 84%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
70°
Feels Like 68°
49
Humidity: 82%
UV Index: 0
Wind: 9 mph
11 PM
Stormy Weather
70°
Feels Like 63°
58
Humidity: 78%
UV Index: 0
Wind: 9 mph

Hourly Air Quality Forecast - AQI (US EPA)

11 AM
25 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.11 µg/m³
  • PM10: 6.55 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

12 PM
29 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.9 µg/m³
  • PM10: 7.35 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

1 PM
34 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.07 µg/m³
  • PM10: 8.55 µg/m³
  • O3: 0.030 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.48 µg/m³
  • PM10: 6.85 µg/m³
  • O3: 0.036 ppm
  • NO2: 0.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.25 µg/m³
  • PM10: 5.56 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.09 µg/m³
  • PM10: 5.38 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.66 µg/m³
  • PM10: 4.92 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.83 µg/m³
  • PM10: 5.08 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.09 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: 5.65 µg/m³
  • PM10: 5.89 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.43 µg/m³
  • PM10: 6.63 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.83 µg/m³
  • PM10: 7.01 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.62 µg/m³
  • PM10: 6.75 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 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: 5.94 µg/m³
  • PM10: 6.02 µg/m³
  • O3: 0.032 ppm
  • NO2: 1.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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