Weather in Duluth, Minnesota

06:22 AM

Now

59° F

Feels Like 55°

Precipitation 4 %

Wind 9 mph

Humidity 95 %

Today

Day 68°

Night 59°

Precipitation 25 %

Wind 15

UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11+

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Duluth Weather Forecast Updated

5 minutes ago

Last updated on September 15, 2025 6:16 AM

Air quality in Duluth

NOW

51 AQI

Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 8.39 µg/m³

PM10 8.49 µg/m³

O₃ 42.59 ppb

NO₂ 1.47 ppb

SO₂ 0.67 ppb

CO 176.83 ppb

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Duluth

Moderate Expected Likely

Dense Fog Advisory

Dense Fog Advisory issued September 15 at 3:24AM CDT until September 15 at 9:00AM CDT by NWS Duluth MN

Sep 15, 3:24 AM → Sep 15, 9:00 AM

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

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

WHEN: Until 9 AM CDT this morning.

IMPACTS: Low visibility could make driving conditions hazardous.

ADDITIONAL DETAILS: The lowest visibilities are expected around
the Twin Ports and North Shore, especially in the higher terrain.
+ Read More

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

Updated: Sep 15, 6:16 AM Source: NWS Alert

Moderate Expected Likely

Beach Hazards Statement

Beach Hazards Statement issued September 15 at 4:18AM CDT until September 15 at 10:00PM CDT by NWS Duluth MN

Sep 15, 1:00 PM → Sep 15, 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 1 PM CDT this afternoon through this evening.

IMPACTS: High wave action can make swimming difficult on days
such as this. Incoming waves in rapid succession can tire even
an experienced swimmer quickly. Rip currents can move you away
from land. To avoid being swept away, swim parallel to the shore
to exit a rip current.
+ Read More

Remain out of the water to avoid hazardous swimming conditions.

Updated: Sep 15, 6:16 AM Source: NWS Alert