Hourly Weather Forecast for Duluth, Minnesota

Hourly Weather | Today › Monday, September 21, 2026

Active Weather Warnings

Beach Hazards Statement

Duluth, Minnesota

2 PM

59°

Feels Like 57°

Humidity: 61%

UV Index: 4

Wind: 15 mph

3 PM

57°

Feels Like 55°

Humidity: 62%

UV Index: 3

Wind: 16 mph

4 PM

57°

Feels Like 54°

Humidity: 64%

UV Index: 2

Wind: 16 mph

5 PM

55°

Feels Like 52°

Humidity: 67%

UV Index: 2

Wind: 16 mph

6 PM

55°

Feels Like 48°

Humidity: 70%

UV Index: 1

Wind: 15 mph

7 PM

54°

Feels Like 46°

Humidity: 77%

UV Index: 0

Wind: 14 mph

8 PM

54°

Feels Like 48°

Humidity: 74%

UV Index: 0

Wind: 13 mph

9 PM

54°

Feels Like 48°

Humidity: 79%

UV Index: 0

Wind: 12 mph

10 PM

54°

Feels Like 48°

Humidity: 80%

UV Index: 0

Wind: 10 mph

11 PM

52°

Feels Like 46°

Humidity: 84%

UV Index: 0

Wind: 10 mph

Hourly Air Quality Forecast - AQI (US EPA)

2 PM

27 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.5 µg/m³
PM₁₀: 0.51 µg/m³
O₃: 0.029 ppm
NO₂: 0.4 ppb
SO₂: 0.1 ppb
CO: 0.14 ppm

Health Recommendations:

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

3 PM

29 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.5 µg/m³
PM₁₀: 0.5 µg/m³
O₃: 0.031 ppm
NO₂: 0.3 ppb
SO₂: 0.1 ppb
CO: 0.14 ppm

Health Recommendations:

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

4 PM

29 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.5 µg/m³
PM₁₀: 0.5 µg/m³
O₃: 0.032 ppm
NO₂: 0.3 ppb
SO₂: 0.1 ppb
CO: 0.14 ppm

Health Recommendations:

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

5 PM

28 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.5 µg/m³
PM₁₀: 0.51 µg/m³
O₃: 0.030 ppm
NO₂: 0.6 ppb
SO₂: 0 ppb
CO: 0.14 ppm

Health Recommendations:

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

6 PM

25 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.5 µg/m³
PM₁₀: 0.58 µg/m³
O₃: 0.027 ppm
NO₂: 1.2 ppb
SO₂: 0 ppb
CO: 0.14 ppm

Health Recommendations:

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

7 PM

23 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.52 µg/m³
PM₁₀: 0.65 µg/m³
O₃: 0.025 ppm
NO₂: 1.8 ppb
SO₂: 0 ppb
CO: 0.15 ppm

Health Recommendations:

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

8 PM

22 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.54 µg/m³
PM₁₀: 0.72 µg/m³
O₃: 0.024 ppm
NO₂: 1.8 ppb
SO₂: 0 ppb
CO: 0.15 ppm

Health Recommendations:

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

9 PM

22 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.56 µg/m³
PM₁₀: 0.73 µg/m³
O₃: 0.024 ppm
NO₂: 1.6 ppb
SO₂: 0 ppb
CO: 0.14 ppm

Health Recommendations:

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

10 PM

24 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.59 µg/m³
PM₁₀: 0.72 µg/m³
O₃: 0.026 ppm
NO₂: 1.2 ppb
SO₂: 0 ppb
CO: 0.14 ppm

Health Recommendations:

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

11 PM

25 AQI

Good air quality Dominant pollutant: O₃

Details

Pollutant Concentrations:

PM_2.5: 0.6 µg/m³
PM₁₀: 0.69 µg/m³
O₃: 0.027 ppm
NO₂: 1 ppb
SO₂: 0 ppb
CO: 0.14 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Duluth

Moderate Expected Likely

Beach Hazards Statement

Beach Hazards Statement issued September 21 at 2:42AM CDT until September 21 at 10:00PM CDT by NWS Duluth MN

Sep 21, 10:00 AM → Sep 21, 10:00 PM

WHAT: Dangerous swimming conditions are expected along the
Lake Superior shoreline due to high wave action and strong rip
currents.

WHERE: Minnesota Park Point and Wisconsin Point Beaches.

WHEN: From 10 AM CDT this morning through this evening.

IMPACTS: Life-threatening waves and rip currents are
expected. Stay out of the water and stay away from dangerous
areas like piers and breakwalls.

+ Read More

Remain out of the water to avoid hazardous swimming conditions.

Updated: Sep 21, 12:43 PM Source: NWS Alert

Hourly Air Quality Forecast - AQI (US EPA)

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Weather Alerts and Warnings for Duluth

Beach Hazards Statement

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