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I-39 Interstate Road Conditions
I-39 Road Conditions & Weather
Radar and live pavement conditions along I-39 from Illinois to Wisconsin — plus closures, road work and the drive broken down into 2 state-by-state stretches.
Updated Sep 10, 2026 9:03 PM CDT · 2 states · Mostly dry, wet in places
Lowest 61°F near Wausau, Wisconsin · Highest wind 5 mph near Rockford, Illinois
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Interstate 39 (I-39) runs from Normal, Illinois, to Rothschild, Wisconsin near Wausau, providing a north–south route through central Illinois and Wisconsin. It passes through cities such as Bloomington-Normal, Rockford, Beloit, Madison, and Stevens Point. Route 39 touches two states, which few two-digit interstates do.
- Road system: Interstate Highway System
- Year of construction: 1980
- Length: 306 miles
Weather data from Sep 10, 2026 9:03 PM CDT
61°F
70°F
5 mph
29.93-30.03 inHg
Current I-39 Conditions by State
Illinois I-39 road conditions
Dry
- Rockford 67°F · 0 mph wind · Dry
Official Illinois road conditions (gettingaroundillinois.com) ↗
Measured state by state, I-39 runs 321 miles south to north from Normal, Illinois to Rothschild, Wisconsin, crossing 2 states. Its longest stretch is 181 miles across Wisconsin; its shortest is 140 miles in Illinois.
| State | Miles | Share | Cities and mile markers |
|---|---|---|---|
| Illinois | 140 | 44% | Rockford 119 |
| Wisconsin | 181 | 56% | Madison 48 · Wausau 181 |
Mile markers count from each state's southern line and start again at the next one, which is how most states number their exits as well. They are measured along the same road geometry these pages draw, so they land within a mile or two of the posted markers. A toll road that runs its own continuous numbering is the exception — on the New York Thruway the posts continue from New York City — and there the figure is how far into the state the place is rather than the number on the sign. Distances are measured state by state, never across a gap.
2 current reports along the route. Always check with the responsible state DOT before setting off.
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Lanes blocked
Lasalle-All Ramps At Int80/Int39
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Lanes blocked
Hudson-E2200 N Rd Ramp To INT 39 SB
Illinois I-39 weather conditions
Summaries fetched Sep 10, 2026 7:02 AM CDT
Rockford, IL weather
- Currently in Rockford, IL, a dense fog advisory is in effect from 5:40 AM to 8:00 AM
- The temperature is 61°F with a dew point of 58°F, leading to a humidity level of 89%
- The wind is calm, blowing from the north at approximately 1 mph
- Visibility is reduced to about 9.8 miles due to the fog
- There are no significant weather impacts affecting outdoor activities at this time, but the fog may create hazardous driving conditions.
Wisconsin I-39 weather conditions
Summaries fetched Sep 10, 2026 7:07 AM CDT
Madison, WI weather
- Current weather conditions in Madison, WI indicate a temperature of 58.6°F with a dew point of 55.4°F and humidity at 89%
- The atmospheric pressure is 30.06 inHg, and visibility is good at 9.9 miles
- Winds are light, coming from the northwest at 2 mph
- The weather is clear and sunny, making for a pleasant morning
- There are no active weather alerts at this time.
I-39 Road Weather FAQ
- Is I-39 closed right now?
- No full closures are reported on I-39 as of Sep 10, 2026 9:01 PM CDT. 2 lane closures, roadworks or restrictions are in force. They are listed under closures and road blocks on this page.
- What are I-39 road conditions today?
- The map on this page colors the route along I-39 by what is on the pavement right now — dry, wet, slush, snow or ice — from radar and surface data, last updated Sep 10, 2026 9:03 PM CDT. Right now temperatures run from 61°F to 70°F and the strongest wind is 5 mph.
- How long is Interstate 39, and which states does it cross?
- Measured state by state, I-39 runs 321 miles south to north, from Normal, Illinois to Rothschild, Wisconsin, through 2 states: Illinois and Wisconsin. The longest stretch is 181 miles across Wisconsin. Mile markers restart at each state line, so Rockford is around mile 119 in Illinois.
- How often are I-39 road conditions updated?
- The road surface and weather layers are rebuilt whenever this page is opened with data more than ten minutes old, and refreshed on a schedule in between, so nothing here is more than about two hours old even on a road nobody has looked at. Closures and road blocks are re-imported from the state 511 feeds every fifteen minutes, and the written state-by-state summaries are refreshed daily. Every section on this page carries the time its data was fetched.
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