Crosswind down the strip: 4 mph7 km/h with 8 mph13 km/h across
Layout © OpenStreetMap contributors · north up
68°20°OvercastFeels like 61°16° · Dew point 42°5°
- Track temp
- 75°F24°C
- Rain chance
- 3%
- Wind
- 9mph15km/hESE
- Density alt.
- 1,347ft411m
- Barometer 30.27 inHg1025 hPa falling
- Humidity 38%
- Cloud 100%
- UV 1
Forecast updated · Open-Meteo
Next 24 hours
The week Hour by hour
NowOvercastTemperature 68°20°Rain chance 3%Wind 9 mph15 km/hESETrack temperature 75°24°
OvercastTemperature 68°20°Rain chance 3%Wind 9 mph15 km/hESETrack temperature 75°24°OvercastTemperature 67°19°Rain chance 4%Wind 7 mph11 km/hESETrack temperature 69°21°
OvercastTemperature 63°17°Rain chance 4%Wind 6 mph10 km/hETrack temperature 63°17°OvercastTemperature 60°16°Rain chance 3%Wind 6 mph9 km/hENETrack temperature 60°16°OvercastTemperature 59°15°Rain chance 2%Wind 6 mph10 km/hETrack temperature 59°15°OvercastTemperature 58°14°Rain chance 3%Wind 5 mph8 km/hESETrack temperature 58°14°OvercastTemperature 57°14°Rain chance 3%Wind 5 mph8 km/hESETrack temperature 57°14°OvercastTemperature 58°14°Rain chance 4%Wind 6 mph10 km/hSSETrack temperature 58°14°OvercastTemperature 58°15°Rain chance 5%Wind 8 mph13 km/hSSETrack temperature 58°15°OvercastTemperature 57°14°Rain chance 8%Wind 6 mph9 km/hSTrack temperature 57°14°OvercastTemperature 56°13°Rain chance 8%Wind 3 mph4 km/hSSETrack temperature 56°13°OvercastTemperature 55°13°Rain chance 10%Wind 3 mph4 km/hENETrack temperature 55°13°OvercastTemperature 56°13°Rain chance 13%Wind 5 mph9 km/hSSETrack temperature 56°13°OvercastTemperature 56°13°Rain chance 18%Wind 4 mph6 km/hSSETrack temperature 56°13°OvercastTemperature 56°13°Rain chance 18%Wind 3 mph5 km/hENETrack temperature 56°13°OvercastTemperature 56°13°Rain chance 24%Wind 5 mph8 km/hESETrack temperature 56°13°OvercastTemperature 56°14°Rain chance 24%Wind 4 mph7 km/hSSWTrack temperature 57°14°OvercastTemperature 59°15°Rain chance 17%Wind 2 mph3 km/hSSWTrack temperature 62°17°OvercastTemperature 64°18°Rain chance 16%Wind 4 mph6 km/hSSETrack temperature 69°20°OvercastTemperature 64°18°Rain chance 13%Wind 6 mph9 km/hSETrack temperature 67°20°OvercastTemperature 64°18°Rain chance 11%Wind 2 mph4 km/hETrack temperature 67°20°OvercastTemperature 67°20°Rain chance 10%Wind 4 mph7 km/hETrack temperature 75°24°OvercastTemperature 66°19°Rain chance 10%Wind 6 mph9 km/hSETrack temperature 70°21°OvercastTemperature 68°20°Rain chance 11%Wind 8 mph12 km/hSETrack temperature 75°24°Hours in your time zone (the track's when they match). Track temperature is an estimate.
Pit box
The racer numbers
Density altitude1,347ft411mField elevation 856 ft
Air density1.177kg/m³96.1% of standard (RAD)
Water grains39grgrains per lb of dry air
Track temp (est.)75°F24°CAsphalt/concrete in 224 W/m² sun
Dew point42°F5°C38% humidity
Barometer30.27inHg1025hPaFalling over 3 h
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.
This week
Day by day
- TodayOct 3168°20° 53°12° 4%Green flag
- TomorrowNov 168°20° 55°13° 24%Green flag
- MonNov 2
62°17° 54°12° 17%Yellow flag - TueNov 375°24° 58°14° 41%Yellow flag
- WedNov 468°20° 59°15° 68%Green flag
- ThuNov 5
67°19° 52°11° 35%Green flag - FriNov 658°14° 52°11° 26%Green flagpartial
| Day | Flag | Sky | High / low | Rain | Gusts | Track temp | Density alt. | Sunrise · sunset |
|---|---|---|---|---|---|---|---|---|
| Today Oct 31 | Green flag | Overcast | 68°20° 53°12° | 4% | 20 mph32 km/h E | 85°29° | 1,347 ft411 m | 8:11 AM · 6:46 PM |
| Tomorrow Nov 1 | Green flag | Overcast | 68°20° 55°13° | 24% | 16 mph26 km/h SE | 75°24° | 1,306 ft398 m | 7:13 AM · 5:44 PM |
| Mon Nov 2 | Yellow flaggusty wind | Light drizzle | 62°17° 54°12° | 17% <0.01 in0.1 mm | 32 mph52 km/h SSE | 66°19° | 1,203 ft367 m | 7:14 AM · 5:43 PM |
| Tue Nov 3 | Yellow flaggusty wind | Overcast | 75°24° 58°14° | 41% | 35 mph56 km/h S | 88°31° | 2,250 ft686 m | 7:15 AM · 5:42 PM |
| Wed Nov 4 | Green flag | Drizzle | 68°20° 59°15° | 68% 0.11 in2.8 mm | 32 mph51 km/h SSW | 70°21° | 1,754 ft535 m | 7:16 AM · 5:41 PM |
| Thu Nov 5 | Green flag | Clear | 67°19° 52°11° | 35% | 14 mph22 km/h NNW | 88°31° | 1,723 ft525 m | 7:17 AM · 5:40 PM |
| Fri Nov 6 | Green flag | Overcast | 58°14° 52°11° | 26% 0.04 in0.9 mm | 15 mph23 km/h N | 63°17° | 1,237 ft377 m | 7:18 AM · 5:39 PM |
Flags judge the racing hours, 9 am to 10 pm at the track. Days marked partial are at the edge of the forecast.
Pit box, all week
Pro 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 68°20° | 42°5° | 38% | 30.27 inHg1025 hPa | 1,347 ft411 m | 1.177 | 39 | 75°24° | 9 mph15 km/h ESE | 3% | |
| 67°19° | 43°6° | 42% | 30.27 inHg1025 hPa | 1,258 ft383 m | 1.181 | 41 | 69°21° | 7 mph11 km/h ESE | 4% | |
| 63°17° | 42°5° | 46% | 30.27 inHg1025 hPa | 1,001 ft305 m | 1.190 | 39 | 63°17° | 6 mph10 km/h E | 4% | |
| 60°16° | 41°5° | 50% | 30.29 inHg1026 hPa | 818 ft249 m | 1.196 | 39 | 60°16° | 6 mph9 km/h ENE | 3% | |
| 59°15° | 41°5° | 51% | 30.29 inHg1026 hPa | 756 ft230 m | 1.198 | 38 | 59°15° | 6 mph10 km/h E | 2% | |
| 58°14° | 42°6° | 56% | 30.32 inHg1027 hPa | 629 ft192 m | 1.203 | 40 | 58°14° | 5 mph8 km/h ESE · gusts 13 mph20 km/h | 3% | |
| 57°14° | 42°5° | 56% | 30.34 inHg1027 hPa | 595 ft181 m | 1.204 | 40 | 57°14° | 5 mph8 km/h ESE | 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.
Raceway Weather Pro
Plan the whole week at Indianapolis Raceway Park
Pit box, all week
Every forecast hour for the next seven days at Indianapolis Raceway Park: 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.
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An email the morning a red or yellow flag is due at Indianapolis Raceway Park, and a heads-up three days out.
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The track
Facts
- Location
- Brownsburg, Indiana
- Layout
- Quarter-mile drag strip; 0.686-mile oval; 2.5-mile road course
- Length
- Quarter mile (1,320 ft)
- Surface
- Asphalt/concrete
- Opened
- 1960
- Series
- NHRA, USAC
- Signature events
- NHRA U.S. Nationals
- Time zone
- America/Indiana/Indianapolis
- Elevation
- 856 ft (261 m)