- Track temp
- 61°F16°C
- Rain chance
- 4%
- Wind
- 8mph13km/hESE · gusts 15 mph24 km/h
- Density alt.
- 904ft276m
- Barometer 30.27 inHg1025 hPa falling
- Humidity 49%
Forecast updated · Open-Meteo
Hour by hour
OvercastTemperature 61°16°Rain chance 4%Wind 8 mph13 km/hESETrack temperature 61°16°OvercastTemperature 58°15°Rain chance 3%Wind 6 mph9 km/hETrack temperature 58°15°OvercastTemperature 57°14°Rain chance 3%Wind 8 mph13 km/hETrack temperature 57°14°OvercastTemperature 57°14°Rain chance 2%Wind 6 mph10 km/hESETrack temperature 57°14°OvercastTemperature 57°14°Rain chance 2%Wind 8 mph13 km/hSETrack temperature 57°14°OvercastTemperature 57°14°Rain chance 3%Wind 11 mph17 km/hSETrack temperature 57°14°OvercastTemperature 57°14°Rain chance 4%Wind 10 mph15 km/hSSETrack temperature 57°14°OvercastTemperature 57°14°Rain chance 7%Wind 8 mph13 km/hSSETrack temperature 57°14°OvercastTemperature 56°14°Rain chance 6%Wind 8 mph13 km/hSSETrack temperature 56°14°OvercastTemperature 55°13°Rain chance 7%Wind 6 mph9 km/hSSETrack temperature 55°13°OvercastTemperature 55°13°Rain chance 10%Wind 6 mph10 km/hSSETrack temperature 55°13°OvercastTemperature 54°12°Rain chance 13%Wind 8 mph12 km/hSTrack temperature 54°12°OvercastTemperature 55°13°Rain chance 9%Wind 2 mph3 km/hWNWTrack temperature 55°13°OvercastTemperature 55°13°Rain chance 9%Wind 4 mph7 km/hESETrack temperature 55°13°
OvercastTemperature 55°13°Rain chance 8%Wind 2 mph4 km/hENETrack temperature 55°13°OvercastTemperature 56°14°Rain chance 9%Wind 3 mph4 km/hETrack temperature 60°16°OvercastTemperature 58°15°Rain chance 11%Wind 6 mph10 km/hETrack temperature 69°21°OvercastTemperature 62°17°Rain chance 10%Wind 1 mph2 km/hSTrack temperature 74°23°OvercastTemperature 62°17°Rain chance 10%Wind 3 mph5 km/hETrack temperature 66°19°OvercastTemperature 64°18°Rain chance 8%Wind 5 mph7 km/hENETrack temperature 73°23°OvercastTemperature 65°18°Rain chance 8%Wind 4 mph7 km/hESETrack temperature 69°21°OvercastTemperature 66°19°Rain chance 10%Wind 6 mph10 km/hSETrack temperature 74°23°OvercastTemperature 66°19°Rain chance 16%Wind 6 mph10 km/hSSETrack temperature 71°22°OvercastTemperature 64°18°Rain chance 11%Wind 3 mph4 km/hSETrack temperature 64°18°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 3167°19° 51°11° 4%Green flag
- TomorrowNov 166°19° 54°12° 16%Green flag
- MonNov 2
60°16° 54°12° 28%Red flag - TueNov 376°24° 57°14° 37%Yellow flag
- WedNov 4
67°19° 62°17° 70%Red flag - ThuNov 5
66°19° 60°15° 31%Red flag - FriNov 659°15° 51°11° 25%Green flagpartial
| Day | Flag | Sky | High / low | Rain | Gusts | Track temp | Density alt. | Sunrise · sunset |
|---|---|---|---|---|---|---|---|---|
| Today Oct 31 | Green flag | Overcast | 67°19° 51°11° | 4% | 21 mph33 km/h E | 81°27° | 1,244 ft379 m | 8:10 AM · 6:44 PM |
| Tomorrow Nov 1 | Green flag | Overcast | 66°19° 54°12° | 16% | 20 mph32 km/h SE | 74°23° | 1,222 ft372 m | 7:11 AM · 5:43 PM |
| Mon Nov 2 | Red flagrain | Light rain | 60°16° 54°12° | 28% 0.1 in2.5 mm | 33 mph53 km/h SSE | 63°17° | 1,058 ft322 m | 7:12 AM · 5:42 PM |
| Tue Nov 3 | Yellow flaggusty wind | Overcast | 76°24° 57°14° | 37% | 36 mph58 km/h S | 88°31° | 2,290 ft698 m | 7:14 AM · 5:41 PM |
| Wed Nov 4 | Red flagrain | Heavy drizzle | 67°19° 62°17° | 70% 0.29 in7.4 mm | 33 mph53 km/h S | 65°18° | 1,632 ft497 m | 7:15 AM · 5:40 PM |
| Thu Nov 5 | Red flagrain | Showers | 66°19° 60°15° | 31% 0.96 in24.4 mm | 14 mph23 km/h ESE | 77°25° | 1,736 ft529 m | 7:16 AM · 5:39 PM |
| Fri Nov 6 | Green flag | Light drizzle | 59°15° 51°11° | 25% 0.54 in13.6 mm | 16 mph25 km/h SW | 54°12° | 927 ft283 m | 7:17 AM · 5:38 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 5 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 61°16° | 42°5° | 49% | 30.27 inHg1025 hPa | 904 ft276 m | 1.193 | 39 | 61°16° | 8 mph13 km/h ESE · gusts 15 mph24 km/h | 4% | |
| 58°15° | 41°5° | 53% | 30.29 inHg1026 hPa | 717 ft219 m | 1.200 | 39 | 58°15° | 6 mph9 km/h E · gusts 15 mph24 km/h | 3% | |
| 57°14° | 43°6° | 60% | 30.32 inHg1027 hPa | 613 ft187 m | 1.203 | 42 | 57°14° | 8 mph13 km/h E · gusts 17 mph27 km/h | 3% | |
| 57°14° | 44°7° | 62% | 30.33 inHg1027 hPa | 575 ft175 m | 1.204 | 43 | 57°14° | 6 mph10 km/h ESE · gusts 15 mph25 km/h | 2% | |
| 57°14° | 42°6° | 58% | 30.33 inHg1027 hPa | 570 ft174 m | 1.205 | 40 | 57°14° | 8 mph13 km/h SE · gusts 18 mph29 km/h | 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 Circle City
Pit box, all week
Every forecast hour for the next seven days at Circle City: 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 Circle City, and a heads-up three days out.
Getting to Circle City
Indianapolis, Indiana
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
- Indianapolis, Indiana
- Layout
- 1/4-mile dirt oval
- Length
- 0.25 mi (0.40 km)
- Surface
- Dirt
- Banking
- slightly banked
- Opened
- 2021
- Series
- Sprint Cars, Late Models, Modifieds, USAC AMSOIL National Sprint Cars, USAC National Midgets, Lucas Oil Late Model Dirt Series
- Time zone
- America/Indiana/Indianapolis
- Elevation
- 863 ft (263 m)