NowOvercastTemperature 55°13°Rain chance 0%Wind 3 mph5 km/hWNWTrack temperature 64°18°
OvercastTemperature 52°11°Rain chance 1%Wind 3 mph5 km/hWTrack temperature 54°12°
OvercastTemperature 50°10°Rain chance 1%Wind 2 mph3 km/hSWTrack temperature 50°10°
OvercastTemperature 48°9°Rain chance 1%Wind 3 mph5 km/hSTrack temperature 48°9°
OvercastTemperature 47°8°Rain chance 0%Wind 2 mph3 km/hSSETrack temperature 47°8°
OvercastTemperature 46°8°Rain chance 1%Wind 2 mph3 km/hESETrack temperature 46°8°
OvercastTemperature 45°7°Rain chance 1%Wind 3 mph5 km/hETrack temperature 45°7°
OvercastTemperature 45°7°Rain chance 1%Wind 4 mph7 km/hENETrack temperature 45°7°
OvercastTemperature 43°6°Rain chance 1%Wind 5 mph8 km/hENETrack temperature 43°6°
OvercastTemperature 42°6°Rain chance 1%Wind 5 mph8 km/hENETrack temperature 42°6°
OvercastTemperature 42°6°Rain chance 1%Wind 5 mph8 km/hENETrack temperature 42°6°
OvercastTemperature 42°5°Rain chance 1%Wind 4 mph7 km/hENETrack temperature 42°5°
OvercastTemperature 41°5°Rain chance 2%Wind 5 mph8 km/hENETrack temperature 41°5°
OvercastTemperature 41°5°Rain chance 2%Wind 5 mph7 km/hENETrack temperature 41°5°
OvercastTemperature 41°5°Rain chance 3%Wind 6 mph10 km/hETrack temperature 41°5°
OvercastTemperature 42°6°Rain chance 3%Wind 6 mph9 km/hETrack temperature 42°6°
OvercastTemperature 45°7°Rain chance 3%Wind 5 mph8 km/hESETrack temperature 47°8°
OvercastTemperature 49°10°Rain chance 3%Wind 6 mph9 km/hESETrack temperature 55°13°
OvercastTemperature 54°12°Rain chance 3%Wind 7 mph11 km/hSETrack temperature 65°18°
OvercastTemperature 57°14°Rain chance 3%Wind 6 mph10 km/hSSETrack temperature 73°23°
OvercastTemperature 60°15°Rain chance 3%Wind 6 mph10 km/hSSETrack temperature 77°25°
OvercastTemperature 61°16°Rain chance 3%Wind 5 mph8 km/hSTrack temperature 75°24°
OvercastTemperature 62°17°Rain chance 3%Wind 4 mph7 km/hSTrack temperature 76°25°
OvercastTemperature 62°17°Rain chance 3%Wind 4 mph6 km/hSSETrack 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 altitude1,127ft344mField elevation 1,483 ft
Air density1.185kg/m³96.7% of standard (RAD)
Water grains32grgrains per lb of dry air
Track temp (est.)64°F18°CDirt in 218 W/m² sun
Dew point36°F2°C47% humidity
Barometer30.42inHg1030hPaSteady over 3 h
SurfaceDryDry, likely dusty: little rain in 48 h
Rain, last 48 h0.0in0mmat 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 3156°13°35°2° 1%Yellow flag
TomorrowNov 162°17°41°5° 4%Green flag
MonNov 258°14°49°9° 4%Green flag
TueNov 369°20°47°8° 2%Green flag
WedNov 469°21°50°10° 39%Yellow flag
ThuNov 560°16°58°14° 47%Red flag
FriNov 660°16°57°14° 44%Red flagpartial
Day
Flag
Sky
High / low
Rain
Gusts
Track temp
Density alt.
Sunrise · sunset
Today Oct 31
Yellow flagcold
Overcast
56°13°35°2°
1%
11 mph18 km/h NNE
77°25°
1,134 ft346 m
7:44 AM · 6:15 PM
Tomorrow Nov 1
Green flag
Overcast
62°17°41°5°
4%
16 mph26 km/h ESE
77°25°
1,540 ft469 m
6:45 AM · 5:13 PM
Mon Nov 2
Green flag
Overcast
58°14°49°9°
4%
14 mph22 km/h SE
71°21°
1,354 ft413 m
6:46 AM · 5:12 PM
Tue Nov 3
Green flag
Overcast
69°20°47°8°
2%
24 mph39 km/h SE
86°30°
2,289 ft698 m
6:47 AM · 5:11 PM
Wed Nov 4
Yellow flaggusty wind
Overcast
69°21°50°10°
39%
30 mph48 km/h SSE
82°28°
2,549 ft777 m
6:49 AM · 5:10 PM
Thu Nov 5
Red flagrain
Heavy drizzle
60°16°58°14°
47% 0.34 in8.7 mm
22 mph35 km/h SSE
60°15°
2,027 ft618 m
6:50 AM · 5:09 PM
Fri Nov 6
Red flagrain
Heavy drizzle
60°16°57°14°
44% 0.27 in6.9 mm
31 mph50 km/h E
60°16°
2,347 ft715 m
6:51 AM · 5:08 PM
Flags judge the racing hours, 9 am to 10 pm at the track. Days marked partial are at the edge of the forecast.
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
55°13°
36°2°
47%
30.42 inHg1030 hPa
1,127 ft344 m
1.185
32
64°18°
3 mph5 km/h WNW
0%
52°11°
35°2°
52%
30.46 inHg1031 hPa
896 ft273 m
1.193
31
54°12°
3 mph5 km/h W
1%
50°10°
34°1°
54%
30.46 inHg1032 hPa
727 ft222 m
1.199
29
50°10°
2 mph3 km/h SW
1%
48°9°
33°0°
55%
30.47 inHg1032 hPa
595 ft181 m
1.204
28
48°9°
3 mph5 km/h S
1%
47°8°
32°0°
56%
30.47 inHg1032 hPa
518 ft158 m
1.206
27
47°8°
2 mph3 km/h SSE
0%
46°8°
31°0°
56%
30.47 inHg1032 hPa
465 ft142 m
1.208
27
46°8°
2 mph3 km/h ESE
1%
45°7°
31°-1°
56%
30.47 inHg1032 hPa
417 ft127 m
1.210
26
45°7°
3 mph5 km/h E
1%
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 Marion Center
Pit box, all week
Every forecast hour for the next seven days at Marion Center: 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 Marion Center, and a heads-up three days out.
OvercastTemperature 50°10°Rain chance 1%Wind 2 mph3 km/hSWTrack temperature 50°10°
60°16° 58°14° 47%Red flag