Today | Weather | Tuesday, June 9, 2026

Active Weather Warnings

Dense Fog Advisory

Weather in Duluth, Minnesota

06:45 PM

Now

61° F

Feels Like 55°

Precipitation 13 %

Wind 10 mph

UV Index (0 - 11+) 1

Humidity 95 %

Today

Day 68°

Night 50°

Precipitation 49 %

Wind 6 mph

UV Index (0 - 11+) 8

Warning: High UV Index Today: 8

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Duluth Weather Forecast Updated

33 minutes ago

Last updated on June 09, 2026 at 6:12 PM

Air Quality in Duluth

NOW

39 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 5.14 µg/m³

PM₁₀ 5.2 µg/m³

O₃ 0.043 ppm

NO₂ 0.6 ppb

SO₂ 0.2 ppb

CO 0.11 ppm

NH₃ 0.83 µg/m³

NO 0.15 µg/m³

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

NH₃ – Ammonia

NO – Nitric oxide

Health Recommendations:

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

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 5.14 µg/m³

PM₁₀ – 5.2 µg/m³

O₃ – 83.53 µg/m³

NO₂ – 1.21 µg/m³

SO₂ – 0.54 µg/m³

CO – 123.86 µg/m³

NH₃ – 0.83 µg/m³

NO – 0.15 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Duluth

Moderate Expected Likely

Dense Fog Advisory

Dense Fog Advisory issued June 9 at 5:25PM CDT until June 10 at 7:00AM CDT by NWS Duluth MN

Jun 9, 5:25 PM → Jun 10, 7:00 AM

WHAT: Visibility one quarter mile or less in dense fog.

WHERE: In Minnesota, Carlton and South St. Louis, Southern Cook
and Southern Lake Counties. In Wisconsin, Douglas County. This
includes the Tribal Lands of the Grand Portage Reservation and the
Fond du Lac Band.

WHEN: Until 7 AM CDT Wednesday.

IMPACTS: Low visibility could make driving conditions hazardous.

ADDITIONAL DETAILS: Mainly around Lake Superior.

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If driving, slow down, use your low-beam headlights and fog lights, and leave plenty of distance ahead of you.

Updated: Jun 9, 6:12 PM Source: NWS Alert