- Track temp
- 65°F18°C
- Rain chance
- 2%
- Wind
- 9mph15km/hESE
- Density alt.
- 690ft210m
- Barometer 30.28 inHg1025 hPa falling
- Humidity 54%
- Cloud 100%
- UV 0
Forecast updated · Open-Meteo
Hour by hour
OvercastTemperature 62°17°Rain chance 2%Wind 9 mph15 km/hESETrack temperature 65°18°
OvercastTemperature 59°15°Rain chance 2%Wind 7 mph11 km/hENETrack temperature 59°15°OvercastTemperature 57°14°Rain chance 2%Wind 4 mph7 km/hSTrack temperature 57°14°OvercastTemperature 56°14°Rain chance 3%Wind 5 mph7 km/hESETrack temperature 56°14°OvercastTemperature 54°12°Rain chance 4%Wind 5 mph9 km/hESETrack temperature 54°12°OvercastTemperature 54°12°Rain chance 3%Wind 9 mph14 km/hSETrack temperature 54°12°OvercastTemperature 54°12°Rain chance 3%Wind 7 mph12 km/hSETrack temperature 54°12°OvercastTemperature 54°12°Rain chance 5%Wind 6 mph10 km/hSETrack temperature 54°12°OvercastTemperature 54°12°Rain chance 8%Wind 7 mph11 km/hSETrack temperature 54°12°OvercastTemperature 54°12°Rain chance 11%Wind 6 mph9 km/hSETrack temperature 54°12°OvercastTemperature 54°12°Rain chance 11%Wind 9 mph15 km/hSSETrack temperature 54°12°
Light drizzleTemperature 54°12°Rain chance 11%Wind 4 mph6 km/hSTrack temperature 54°12°Heavy drizzleTemperature 55°13°Rain chance 9%Wind 3 mph5 km/hWTrack temperature 55°13°OvercastTemperature 55°13°Rain chance 7%Wind 4 mph6 km/hSETrack temperature 55°13°OvercastTemperature 55°13°Rain chance 9%Wind 2 mph3 km/hSETrack temperature 55°13°OvercastTemperature 55°13°Rain chance 10%Wind 7 mph11 km/hENETrack temperature 55°13°OvercastTemperature 56°13°Rain chance 9%Wind 5 mph8 km/hETrack temperature 58°15°OvercastTemperature 56°13°Rain chance 12%Wind 5 mph7 km/hSETrack temperature 60°15°OvercastTemperature 58°15°Rain chance 16%Wind 2 mph3 km/hSSETrack temperature 65°19°OvercastTemperature 61°16°Rain chance 14%Wind 1 mph2 km/hSTrack temperature 71°22°OvercastTemperature 62°17°Rain chance 16%Wind 5 mph8 km/hESETrack temperature 67°20°OvercastTemperature 64°18°Rain chance 19%Wind 7 mph11 km/hESETrack temperature 73°23°OvercastTemperature 66°19°Rain chance 14%Wind 9 mph14 km/hSETrack temperature 76°24°OvercastTemperature 65°18°Rain chance 15%Wind 8 mph14 km/hSETrack temperature 70°21°Hours in your time zone (the track's when they match). Track temperature is an estimate.
The racer numbers
Computed from the forecast air temperature, dew point and station pressure (NWS formulas). Track temperature is estimated from sun, wind and the surface; it is not a sensor reading. How these are figured.
Day by day
- TodayOct 3165°19° 53°12° 42%Green flag
- TomorrowNov 166°19° 54°12° 19%Green flag
- MonNov 262°17° 56°13° 18%Yellow flag
- TueNov 369°21° 59°15° 64%Red flag
- WedNov 464°18° 52°11° 63%Yellow flag
- ThuNov 561°16° 49°10° 23%Green flag
- FriNov 656°13° 53°12° 22%Green flagpartial
| Day | Flag | Sky | High / low | Rain | Gusts | Track temp | Density alt. | Sunrise · sunset |
|---|---|---|---|---|---|---|---|---|
| Today Oct 31 | Green flag | Light drizzle | 65°19° 53°12° | 42% 0.02 in0.4 mm | 23 mph36 km/h ESE | 79°26° | 837 ft255 m | 7:21 AM · 5:50 PM |
| Tomorrow Nov 1 | Green flag | Light drizzle | 66°19° 54°12° | 19% 0.07 in1.9 mm | 17 mph27 km/h SE | 76°24° | 896 ft273 m | 6:23 AM · 4:49 PM |
| Mon Nov 2 | Yellow flaggusty wind | Overcast | 62°17° 56°13° | 18% <0.01 in0.1 mm | 37 mph59 km/h SSE | 64°18° | 1,025 ft312 m | 6:24 AM · 4:47 PM |
| Tue Nov 3 | Red flagrain, gusty wind | Heavy drizzle | 69°21° 59°15° | 64% 0.63 in16.1 mm | 44 mph71 km/h S | 78°25° | 1,725 ft526 m | 6:25 AM · 4:46 PM |
| Wed Nov 4 | Yellow flaggusty wind | Overcast | 64°18° 52°11° | 63% 0.05 in1.2 mm | 25 mph40 km/h WSW | 76°25° | 1,328 ft405 m | 6:26 AM · 4:45 PM |
| Thu Nov 5 | Green flag | Overcast | 61°16° 49°10° | 23% | 13 mph21 km/h NNW | 80°27° | 969 ft295 m | 6:28 AM · 4:44 PM |
| Fri Nov 6 | Green flag | Light drizzle | 56°13° 53°12° | 22% 0.09 in2.3 mm | 19 mph31 km/h N | 58°15° | 734 ft224 m | 6:29 AM · 4:43 PM |
Flags judge the racing hours, 9 am to 10 pm at the track. Days marked partial are at the edge of the forecast.
Every hour, every number
Today’s remaining 7 hours are free. Pro members get all seven days and the CSV.
| Hour | Air | Dew pt | Humidity | Barometer | Density alt. | Air density kg/m³ | Grains | Track temp (est.) | Wind | Rain |
|---|---|---|---|---|---|---|---|---|---|---|
| 62°17° | 46°8° | 54% | 30.28 inHg1025 hPa | 690 ft210 m | 1.200 | 45 | 65°18° | 9 mph15 km/h ESE | 2% | |
| 59°15° | 46°8° | 61% | 30.26 inHg1025 hPa | 501 ft153 m | 1.207 | 46 | 59°15° | 7 mph11 km/h ENE | 2% | |
| 57°14° | 45°7° | 63% | 30.29 inHg1026 hPa | 331 ft101 m | 1.213 | 44 | 57°14° | 4 mph7 km/h S | 2% | |
| 56°14° | 45°7° | 65% | 30.29 inHg1026 hPa | 277 ft84 m | 1.215 | 44 | 56°14° | 5 mph7 km/h ESE · gusts 13 mph21 km/h | 3% | |
| 54°12° | 44°7° | 67% | 30.31 inHg1027 hPa | 118 ft36 m | 1.221 | 42 | 54°12° | 5 mph9 km/h ESE · gusts 16 mph26 km/h | 4% | |
| 54°12° | 43°6° | 65% | 30.33 inHg1027 hPa | 84 ft26 m | 1.222 | 41 | 54°12° | 9 mph14 km/h SE · gusts 17 mph27 km/h | 3% | |
| 54°12° | 43°6° | 66% | 30.32 inHg1027 hPa | 70 ft21 m | 1.222 | 41 | 54°12° | 7 mph12 km/h SE · gusts 15 mph24 km/h | 3% |
Every hour from the forecast, the same arithmetic as the pit box above (NWS density-altitude formula; track temperature is an estimate). Hours in your time zone, the track’s when they match.
Plan the whole week at Autobahn
Pit box, all week
Every forecast hour for the next seven days at Autobahn: density altitude, air density, grains, track temp and more, with a CSV for the tuning laptop.
Do the models agree?
ECMWF, GFS and ICON side by side for the next three racing days, so you know when the forecast is shaky.
Next 6 hours of rain
Rain in 15-minute steps for the next six hours at your tracks, refreshed every hour.
Alerts for your tracks
An email the morning a red or yellow flag is due at Autobahn, and a heads-up three days out.
Getting to Autobahn
3795 Centerpoint Way, Joliet, IL 60436
Camping On site
Only at events that allow it: $45 weekend camping pass. RVs are allowed but there is no power or dump facility; tents must be tethered to the ground. autobahncc.com
Good to know
Spectators only when the event coordinator approves; ask the coordinator for entry times. Alcohol only after the track closes, in designated areas; no glass. autobahncc.com
From the track’s own pages, checked October 2026. Prices and rules change by event, so confirm before you go.
Facts
- Location
- Joliet, Illinois
- Layout
- 3.56-mile full course; North and South circuits
- Length
- 3.56 mi (5.73 km)
- Surface
- Asphalt
- Opened
- 2004
- Series
- Club racing
- Signature events
- Private motorsports country club
- Time zone
- America/Chicago
- Elevation
- 600 ft (183 m)