Hourly Weather | Today Tuesday, September 1, 2026
Duluth, Minnesota
11 AM
Cloudy Weather
75°
Feels Like 77°
0
Humidity: 55%
UV Index: 4
Wind: 12 mph
12 PM
Cloudy Weather
79°
Feels Like 81°
0
Humidity: 48%
UV Index: 5
Wind: 13 mph
1 PM
Cloudy Weather
81°
Feels Like 82°
0
Humidity: 42%
UV Index: 5
Wind: 14 mph
2 PM
Cloudy Weather
82°
Feels Like 84°
0
Humidity: 39%
UV Index: 5
Wind: 14 mph
3 PM
Cloudy Weather
84°
Feels Like 84°
0
Humidity: 36%
UV Index: 4
Wind: 14 mph
4 PM
Cloudy Weather
82°
Feels Like 82°
0
Humidity: 38%
UV Index: 3
Wind: 14 mph
5 PM
Cloudy Weather
82°
Feels Like 82°
0
Humidity: 40%
UV Index: 2
Wind: 12 mph
6 PM
Cloudy Weather
81°
Feels Like 79°
0
Humidity: 44%
UV Index: 1
Wind: 9 mph
7 PM
Cloudy Weather
79°
Feels Like 75°
0
Humidity: 50%
UV Index: 1
Wind: 8 mph
8 PM
Cloudy Night
75°
Feels Like 73°
7
Humidity: 58%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
72°
Feels Like 70°
7
Humidity: 64%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
70°
Feels Like 66°
7
Humidity: 71%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
66°
Feels Like 64°
7
Humidity: 78%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.6 µg/m³
  • PM10: 5.16 µg/m³
  • O3: 0.034 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.17 µg/m³
  • PM10: 5.75 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.92 µg/m³
  • PM10: 6.54 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.58 µg/m³
  • PM10: 5.27 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.98 µg/m³
  • PM10: 4.72 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.4 ppb
  • SO2: 0.8 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.04 µg/m³
  • PM10: 4.83 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.5 ppb
  • SO2: 0.9 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.26 µg/m³
  • PM10: 5.13 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.8 ppb
  • SO2: 1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.41 µg/m³
  • PM10: 5.36 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.2 ppb
  • SO2: 1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.33 µg/m³
  • PM10: 5.35 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.6 ppb
  • SO2: 1 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.14 µg/m³
  • PM10: 5.18 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4 µg/m³
  • PM10: 5.06 µg/m³
  • O3: 0.030 ppm
  • NO2: 2.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.82 µg/m³
  • PM10: 4.92 µg/m³
  • O3: 0.025 ppm
  • NO2: 2.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.61 µg/m³
  • PM10: 4.68 µg/m³
  • O3: 0.021 ppm
  • NO2: 2.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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