62°17°OvercastFeels like 63°17° · Dew point 60°15°
- Track temp
- 66°F19°C
- Rain chance
- 4%
- Wind
- 5mph8km/hENE
- Density alt.
- 1,233ft376m
- Barometer 30.22 inHg1023 hPa falling
- Humidity 90%
- Cloud 100%
- UV 1
Forecast updated · Open-Meteo
Next 24 hours
The week Hour by hour
NowOvercastTemperature 62°17°Rain chance 4%Wind 5 mph8 km/hENETrack temperature 66°19°
OvercastTemperature 62°17°Rain chance 4%Wind 5 mph8 km/hENETrack temperature 66°19°OvercastTemperature 62°17°Rain chance 4%Wind 7 mph11 km/hENETrack temperature 65°18°OvercastTemperature 60°16°Rain chance 4%Wind 8 mph12 km/hETrack temperature 60°16°
OvercastTemperature 60°15°Rain chance 5%Wind 9 mph15 km/hETrack temperature 60°15°OvercastTemperature 58°15°Rain chance 5%Wind 10 mph16 km/hESETrack temperature 58°15°OvercastTemperature 58°14°Rain chance 6%Wind 6 mph10 km/hSETrack temperature 58°14°OvercastTemperature 58°14°Rain chance 4%Wind 5 mph8 km/hSETrack temperature 58°14°OvercastTemperature 57°14°Rain chance 4%Wind 3 mph5 km/hENETrack temperature 57°14°OvercastTemperature 57°14°Rain chance 8%Wind 2 mph4 km/hETrack temperature 57°14°OvercastTemperature 56°13°Rain chance 10%Wind 6 mph10 km/hETrack temperature 56°13°
Partly cloudyTemperature 55°13°Rain chance 6%Wind 7 mph12 km/hETrack temperature 55°13°OvercastTemperature 55°13°Rain chance 5%Wind 5 mph8 km/hETrack temperature 55°13°OvercastTemperature 55°13°Rain chance 4%Wind 5 mph9 km/hETrack temperature 55°13°OvercastTemperature 54°12°Rain chance 3%Wind 5 mph9 km/hETrack temperature 54°12°OvercastTemperature 54°12°Rain chance 3%Wind 5 mph8 km/hETrack temperature 54°12°OvercastTemperature 55°13°Rain chance 4%Wind 6 mph9 km/hESETrack temperature 55°13°OvercastTemperature 55°13°Rain chance 4%Wind 3 mph6 km/hESETrack temperature 55°13°OvercastTemperature 56°13°Rain chance 4%Wind 5 mph9 km/hESETrack temperature 58°15°
Partly cloudyTemperature 58°15°Rain chance 3%Wind 8 mph13 km/hSETrack temperature 65°18°OvercastTemperature 60°16°Rain chance 4%Wind 8 mph12 km/hSSETrack temperature 69°20°OvercastTemperature 62°17°Rain chance 4%Wind 7 mph12 km/hSETrack temperature 75°24°OvercastTemperature 63°17°Rain chance 3%Wind 7 mph12 km/hSSETrack temperature 70°21°OvercastTemperature 63°17°Rain chance 3%Wind 8 mph12 km/hSSETrack temperature 67°19°
Light drizzleTemperature 62°16°Rain chance 3%Wind 6 mph10 km/hSETrack temperature 62°17°Hours in your time zone (the track's when they match). Track temperature is an estimate.
Pit box
The racer numbers
Density altitude1,233ft376mField elevation 912 ft
Air density1.181kg/m³96.4% of standard (RAD)
Water grains78grgrains per lb of dry air
Track temp (est.)66°F19°CDirt in 99 W/m² sun
Dew point60°F15°C90% humidity
Barometer30.22inHg1023hPaFalling over 3 h
SurfaceTackyTacky: some moisture in the top layer
Rain, last 48 h0.37in9.4mmat the track
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 3162°17° 53°11° 60%Green flag
- TomorrowNov 163°17° 54°12° 10%Green flag
- MonNov 2
70°21° 59°15° 77%Red flag - TueNov 366°19° 49°9° 73%Yellow flag
- WedNov 463°17° 47°8° 18%Green flag
- ThuNov 555°13° 47°9° 13%Green flag
- FriNov 656°13° 50°10° 9%Green flagpartial
| Day | Flag | Sky | High / low | Rain | Gusts | Track temp | Density alt. | Sunrise · sunset |
|---|---|---|---|---|---|---|---|---|
| Today Oct 31 | Green flag | Drizzle | 62°17° 53°11° | 60% 0.04 in1.1 mm | 23 mph36 km/h ESE | 74°24° | 1,244 ft379 m | 7:41 AM · 6:10 PM |
| Tomorrow Nov 1 | Green flag | Drizzle | 63°17° 54°12° | 10% 0.04 in1.1 mm | 22 mph35 km/h SE | 75°24° | 1,268 ft386 m | 6:42 AM · 5:09 PM |
| Mon Nov 2 | Red flagrain, gusty wind | Showers | 70°21° 59°15° | 77% 1.13 in28.7 mm | 44 mph71 km/h SSE | 79°26° | 2,290 ft698 m | 6:43 AM · 5:08 PM |
| Tue Nov 3 | Yellow flaggusty wind | Overcast | 66°19° 49°9° | 73% 0.67 in16.9 mm | 36 mph58 km/h SW | 70°21° | 1,337 ft408 m | 6:45 AM · 5:06 PM |
| Wed Nov 4 | Green flag | Overcast | 63°17° 47°8° | 18% | 28 mph46 km/h W | 77°25° | 1,626 ft496 m | 6:46 AM · 5:05 PM |
| Thu Nov 5 | Green flag | Overcast | 55°13° 47°9° | 13% | 12 mph20 km/h N | 60°16° | 906 ft276 m | 6:47 AM · 5:04 PM |
| Fri Nov 6 | Green flag | Overcast | 56°13° 50°10° | 9% | 11 mph18 km/h NNE | 64°18° | 1,029 ft314 m | 6:48 AM · 5:03 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 8 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° | 60°15° | 90% | 30.22 inHg1023 hPa | 1,233 ft376 m | 1.181 | 78 | 66°19° | 5 mph8 km/h ENE | 4% | |
| 62°17° | 59°15° | 92% | 30.20 inHg1023 hPa | 1,205 ft367 m | 1.182 | 77 | 65°18° | 7 mph11 km/h ENE | 4% | |
| 60°16° | 58°15° | 94% | 30.20 inHg1023 hPa | 1,088 ft332 m | 1.187 | 74 | 60°16° | 8 mph12 km/h E · gusts 18 mph29 km/h | 4% | |
| 60°15° | 58°15° | 95% | 30.22 inHg1023 hPa | 1,044 ft318 m | 1.188 | 74 | 60°15° | 9 mph15 km/h E · gusts 18 mph29 km/h | 5% | |
| 58°15° | 58°14° | 97% | 30.23 inHg1024 hPa | 949 ft289 m | 1.191 | 72 | 58°15° | 10 mph16 km/h ESE · gusts 19 mph31 km/h | 5% | |
| 58°14° | 56°13° | 92% | 30.27 inHg1025 hPa | 861 ft262 m | 1.194 | 67 | 58°14° | 6 mph10 km/h SE · gusts 15 mph25 km/h | 6% | |
| 58°14° | 55°13° | 92% | 30.29 inHg1026 hPa | 811 ft247 m | 1.196 | 66 | 58°14° | 5 mph8 km/h SE · gusts 16 mph25 km/h | 4% | |
| 57°14° | 55°13° | 94% | 30.27 inHg1025 hPa | 799 ft244 m | 1.197 | 66 | 57°14° | 3 mph5 km/h ENE | 4% |
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 Knoxville
Pit box, all week
Every forecast hour for the next seven days at Knoxville: 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 Knoxville, and a heads-up three days out.
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The track
Facts
- Location
- Knoxville, Iowa
- Layout
- Half-mile semi-banked dirt oval, the Sprint Car Capital of the World
- Length
- 0.5 mi (0.80 km)
- Surface
- Dirt
- Banking
- semi-banked
- Opened
- 1954
- Series
- World of Outlaws, 410 Sprints
- Signature events
- Knoxville Nationals
- Time zone
- America/Chicago
- Elevation
- 912 ft (278 m)