- Track temp
- 56°F14°C
- Rain chance
- 3%
- Wind
- 6mph9km/hSE · gusts 15 mph24 km/h
- Density alt.
- 307ft94m
- Barometer 30.32 inHg1027 hPa steady
- Humidity 69%
Forecast updated · Open-Meteo
Hour by hour
OvercastTemperature 56°14°Rain chance 3%Wind 6 mph9 km/hSETrack temperature 56°14°OvercastTemperature 55°13°Rain chance 3%Wind 9 mph14 km/hSETrack temperature 55°13°OvercastTemperature 56°13°Rain chance 3%Wind 9 mph15 km/hSETrack temperature 56°13°OvercastTemperature 55°13°Rain chance 2%Wind 9 mph15 km/hSETrack temperature 55°13°OvercastTemperature 56°13°Rain chance 4%Wind 10 mph16 km/hSETrack temperature 56°13°OvercastTemperature 56°13°Rain chance 6%Wind 8 mph13 km/hSSETrack temperature 56°13°OvercastTemperature 56°13°Rain chance 12%Wind 8 mph13 km/hSSETrack temperature 56°13°OvercastTemperature 55°13°Rain chance 11%Wind 7 mph11 km/hSSETrack temperature 55°13°OvercastTemperature 54°12°Rain chance 12%Wind 6 mph10 km/hSETrack temperature 54°12°OvercastTemperature 54°12°Rain chance 14%Wind 5 mph8 km/hSTrack temperature 54°12°OvercastTemperature 54°12°Rain chance 7%Wind 7 mph10 km/hSSETrack temperature 54°12°OvercastTemperature 53°12°Rain chance 8%Wind 6 mph9 km/hSTrack temperature 53°12°
OvercastTemperature 53°12°Rain chance 8%Wind 7 mph11 km/hSETrack temperature 53°12°
Partly cloudyTemperature 55°13°Rain chance 8%Wind 3 mph5 km/hSETrack temperature 60°16°OvercastTemperature 59°15°Rain chance 9%Wind 3 mph4 km/hENETrack temperature 69°20°OvercastTemperature 60°15°Rain chance 9%Wind 4 mph6 km/hSTrack temperature 72°22°OvercastTemperature 62°16°Rain chance 9%Wind 1 mph2 km/hSTrack temperature 72°22°OvercastTemperature 64°18°Rain chance 10%Wind 4 mph7 km/hESETrack temperature 71°22°OvercastTemperature 66°19°Rain chance 10%Wind 7 mph12 km/hESETrack temperature 75°24°OvercastTemperature 68°20°Rain chance 9%Wind 9 mph15 km/hSETrack temperature 76°25°OvercastTemperature 67°19°Rain chance 10%Wind 9 mph14 km/hSETrack temperature 72°22°OvercastTemperature 65°18°Rain chance 8%Wind 7 mph12 km/hSETrack temperature 67°19°OvercastTemperature 63°17°Rain chance 7%Wind 5 mph7 km/hSETrack temperature 63°17°OvercastTemperature 62°16°Rain chance 6%Wind 6 mph10 km/hSETrack temperature 62°16°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 3164°18° 53°12° 37%Green flag
- TomorrowNov 1
68°20° 53°12° 14%Green flag - MonNov 260°15° 56°14° 17%Yellow flag
- TueNov 371°22° 59°15° 64%Red flag
- WedNov 464°18° 52°11° 63%Green flag
- ThuNov 5
55°13° 52°11° 23%Red flag - FriNov 652°11° 47°8° 24%Green flagpartial
| Day | Flag | Sky | High / low | Rain | Gusts | Track temp | Density alt. | Sunrise · sunset |
|---|---|---|---|---|---|---|---|---|
| Today Oct 31 | Green flag | Overcast | 64°18° 53°12° | 37% | 24 mph39 km/h ESE | 79°26° | 807 ft246 m | 7:21 AM · 5:50 PM |
| Tomorrow Nov 1 | Green flag | Light drizzle | 68°20° 53°12° | 14% 0.02 in0.4 mm | 21 mph34 km/h SSE | 76°25° | 1,066 ft325 m | 6:22 AM · 4:48 PM |
| Mon Nov 2 | Yellow flaggusty wind | Overcast | 60°15° 56°14° | 17% 0.05 in1.3 mm | 38 mph62 km/h SSE | 64°18° | 975 ft297 m | 6:24 AM · 4:47 PM |
| Tue Nov 3 | Red flagrain, gusty wind | Heavy drizzle | 71°22° 59°15° | 64% 0.45 in11.5 mm | 44 mph71 km/h S | 83°29° | 1,922 ft586 m | 6:25 AM · 4:46 PM |
| Wed Nov 4 | Green flag | Drizzle | 64°18° 52°11° | 63% 1.77 in44.9 mm | 27 mph43 km/h NE | 64°18° | 1,312 ft400 m | 6:26 AM · 4:45 PM |
| Thu Nov 5 | Red flagrain | Rain | 55°13° 52°11° | 23% 0.61 in15.5 mm | 14 mph22 km/h NNE | 57°14° | 663 ft202 m | 6:27 AM · 4:44 PM |
| Fri Nov 6 | Green flag | Drizzle | 52°11° 47°8° | 24% 0.41 in10.5 mm | 15 mph24 km/h NW | 50°10° | 347 ft106 m | 6:29 AM · 4:42 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 4 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 56°14° | 46°8° | 69% | 30.32 inHg1027 hPa | 307 ft94 m | 1.214 | 47 | 56°14° | 6 mph9 km/h SE · gusts 15 mph24 km/h | 3% | |
| 55°13° | 44°7° | 65% | 30.33 inHg1027 hPa | 231 ft70 m | 1.217 | 43 | 55°13° | 9 mph14 km/h SE · gusts 17 mph28 km/h | 3% | |
| 56°13° | 42°6° | 61% | 30.34 inHg1027 hPa | 238 ft73 m | 1.216 | 40 | 56°13° | 9 mph15 km/h SE | 3% | |
| 55°13° | 44°6° | 64% | 30.32 inHg1027 hPa | 236 ft72 m | 1.217 | 42 | 55°13° | 9 mph15 km/h SE | 2% |
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 Chicagoland
Pit box, all week
Every forecast hour for the next seven days at Chicagoland: 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 Chicagoland, and a heads-up three days out.
Getting to Chicagoland
Joliet, Illinois
No street address published; directions go to the track itself.
We have not checked parking and camping here yet. The track’s own site has them: official site.
Facts
- Location
- Joliet, Illinois
- Layout
- 1.52-mile tri-oval
- Length
- 1.52 mi (2.45 km)
- Surface
- Asphalt
- Banking
- 18°
- Opened
- 2001
- Series
- NASCAR Cup Series, NASCAR O'Reilly Auto Parts Series, ARCA Menards Series
- Signature events
- eero 400
- Time zone
- America/Chicago
- Elevation
- 646 ft (197 m)