Duluth, Minnesota Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Duluth weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Foggy49%—66°56°—
- SundayJul 5Light Rain22%0.16″64°55°-2°
- MondayJul 6Overcast15%—81°52°+17°
- TuesdayJul 7Showers44%0.48″79°62°-2°
- WednesdayJul 8Drizzle60%0.09″68°58°-11°
- ThursdayJul 9Overcast49%—70°55°+2°
- FridayJul 10Drizzle10%0.04″77°54°+7°
AQI 51 (Moderate), driven by Ozone. AQI down 5 over the last 6 hours (gradual decline). Ozone at AQI 32. Overcast through the UV peak window (cloud cover ~95%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 32. Overcast through the UV peak window (cloud cover ~95%) — afternoon ozone should stay flat.
- Present
- AQI 32
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 7
PM × Wind × Precip
PM2.5 at 5.2 µg/m³ (AQI 29) with a 1.00 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 1.00
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:14 PM
- Moonset
- 10:06 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Duluth at a glance
- Today vs. normal: 7°F below the seasonal normal for this latitude
- Last frost: May 27 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 55802, 55803, 55804, 55805, 55806, 55807, 55808, 55810 +3 more
15-Day Forecast — Duluth
- Sat66°56°49%
- Sun64°55°22%
- Mon81°52°15%
- Tue79°62°44%
- Wed68°58°60%
- Thu70°55°49%
- Fri77°54°10%
- Sat77°61°12%
- Sun79°56°9%
- Mon74°61°14%
- Tue75°60°11%
- Wed83°58°16%
- Thu83°66°19%
- Fri83°64°17%
- Sat82°55°19%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Duluth
Right now in the garden
Peak growing season
As of July 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — Duluth
SPC has placed Duluth in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in Duluth
- 55803
- 55802
- 55807
- 55806
- 55805
- 55804
- 55808
- 55810
- 55811
- 55812
- 55815
- 55816