NowOvercastTemperature 74°24°Rain chance 1%Wind 3 mph5 km/hWNWTrack temperature 88°31°
Mostly clearTemperature 76°24°Rain chance 1%Wind 3 mph4 km/hWNWTrack temperature 90°32°
OvercastTemperature 75°24°Rain chance 1%Wind 5 mph9 km/hNWTrack temperature 79°26°
OvercastTemperature 72°22°Rain chance 1%Wind 5 mph8 km/hNTrack temperature 72°22°
Partly cloudyTemperature 71°22°Rain chance 1%Wind 5 mph8 km/hNNETrack temperature 71°22°
Mostly clearTemperature 70°21°Rain chance 1%Wind 6 mph9 km/hNTrack temperature 70°21°
ClearTemperature 69°20°Rain chance 1%Wind 4 mph7 km/hNNETrack temperature 69°20°
ClearTemperature 68°20°Rain chance 1%Wind 5 mph8 km/hNTrack temperature 68°20°
OvercastTemperature 67°20°Rain chance 1%Wind 5 mph9 km/hNETrack temperature 67°20°
Partly cloudyTemperature 66°19°Rain chance 1%Wind 4 mph7 km/hNETrack temperature 66°19°
ClearTemperature 66°19°Rain chance 1%Wind 5 mph8 km/hNETrack temperature 66°19°
Mostly clearTemperature 65°19°Rain chance 1%Wind 4 mph7 km/hNETrack temperature 65°19°
OvercastTemperature 65°18°Rain chance 1%Wind 4 mph7 km/hNNETrack temperature 65°18°
Partly cloudyTemperature 64°18°Rain chance 2%Wind 4 mph6 km/hNNETrack temperature 64°18°
FogTemperature 63°17°Rain chance 3%Wind 3 mph5 km/hNNETrack temperature 63°17°
OvercastTemperature 63°17°Rain chance 3%Wind 4 mph7 km/hNTrack temperature 63°17°
OvercastTemperature 63°17°Rain chance 3%Wind 4 mph6 km/hNTrack temperature 63°17°
OvercastTemperature 66°19°Rain chance 3%Wind 4 mph7 km/hNNETrack temperature 70°21°
OvercastTemperature 68°20°Rain chance 3%Wind 5 mph8 km/hNNETrack temperature 79°26°
OvercastTemperature 72°22°Rain chance 3%Wind 5 mph9 km/hNNETrack temperature 89°32°
OvercastTemperature 75°24°Rain chance 3%Wind 6 mph9 km/hNNETrack temperature 96°35°
OvercastTemperature 78°25°Rain chance 2%Wind 5 mph8 km/hNETrack temperature 102°39°
Partly cloudyTemperature 80°27°Rain chance 3%Wind 5 mph9 km/hNETrack temperature 105°40°
Partly cloudyTemperature 80°27°Rain chance 3%Wind 5 mph8 km/hENETrack temperature 99°37°
Hours in your time zone (the track's when they match). Track temperature is an estimate.
Pit box
The racer numbers
Density altitude1,835ft559mField elevation 571 ft
Air density1.161kg/m³94.7% of standard (RAD)
Water grains109grgrains per lb of dry air
Track temp (est.)88°F31°CDirt in 352 W/m² sun
Dew point69°F21°C84% humidity
Barometer30.05inHg1018hPaSteady over 3 h
SurfaceDryDry, likely dusty: little rain in 48 h
Rain, last 48 h0.06in1.5mmat 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 3176°24°65°18° 9%Green flag
TomorrowNov 180°27°63°17° 3%Green flag
MonNov 287°30°65°18° 2%Yellow flag
TueNov 374°23°62°17° 83%Red flag
WedNov 472°22°56°13° 3%Green flag
ThuNov 578°26°57°14° 8%Green flag
FriNov 674°23°58°14° 3%Green flagpartial
Day
Flag
Sky
High / low
Rain
Gusts
Track temp
Density alt.
Sunrise · sunset
Today Oct 31
Green flag
Overcast
76°24°65°18°
9%
11 mph18 km/h NNE
90°32°
1,889 ft576 m
7:40 AM · 6:42 PM
Tomorrow Nov 1
Green flag
Overcast
80°27°63°17°
3%
12 mph19 km/h NE
105°40°
2,090 ft637 m
6:41 AM · 5:42 PM
Mon Nov 2
Yellow flaggusty wind
Light drizzle
87°30°65°18°
2% <0.01 in0.1 mm
27 mph44 km/h S
102°39°
2,787 ft849 m
6:42 AM · 5:41 PM
Tue Nov 3
Red flagrain
Heavy showers
74°23°62°17°
83% 1.04 in26.3 mm
28 mph45 km/h WNW
86°30°
1,925 ft587 m
6:43 AM · 5:40 PM
Wed Nov 4
Green flag
Overcast
72°22°56°13°
3%
18 mph29 km/h N
93°34°
1,777 ft542 m
6:44 AM · 5:39 PM
Thu Nov 5
Green flag
Clear
78°26°57°14°
8%
8 mph13 km/h NW
103°40°
2,155 ft657 m
6:44 AM · 5:38 PM
Fri Nov 6
Green flag
Overcast
74°23°58°14°
3%
22 mph35 km/h NNW
93°34°
1,843 ft562 m
6:45 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.
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
74°24°
69°21°
84%
30.05 inHg1018 hPa
1,835 ft559 m
1.161
109
88°31°
3 mph5 km/h WNW
1%
76°24°
69°20°
79%
30.07 inHg1018 hPa
1,889 ft576 m
1.159
106
90°32°
3 mph4 km/h WNW
1%
75°24°
68°20°
79%
30.07 inHg1018 hPa
1,818 ft554 m
1.161
104
79°26°
5 mph9 km/h NW
1%
72°22°
68°20°
87%
30.08 inHg1019 hPa
1,667 ft508 m
1.166
105
72°22°
5 mph8 km/h N
1%
71°22°
68°20°
88%
30.08 inHg1019 hPa
1,608 ft490 m
1.168
103
71°22°
5 mph8 km/h NNE
1%
70°21°
67°20°
91%
30.10 inHg1019 hPa
1,478 ft450 m
1.173
101
70°21°
6 mph9 km/h N
1%
69°20°
66°19°
92%
30.09 inHg1019 hPa
1,407 ft429 m
1.175
98
69°20°
4 mph7 km/h NNE
1%
68°20°
66°19°
93%
30.11 inHg1020 hPa
1,327 ft404 m
1.178
96
68°20°
5 mph8 km/h N
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 Cotton Bowl
Pit box, all week
Every forecast hour for the next seven days at Cotton Bowl: 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 Cotton Bowl, and a heads-up three days out.
Mostly clearTemperature 76°24°Rain chance 1%Wind 3 mph4 km/hWNWTrack temperature 90°32°
OvercastTemperature 72°22°Rain chance 1%Wind 5 mph8 km/hNTrack temperature 72°22°
Partly cloudyTemperature 71°22°Rain chance 1%Wind 5 mph8 km/hNNETrack temperature 71°22°
Mostly clearTemperature 70°21°Rain chance 1%Wind 6 mph9 km/hNTrack temperature 70°21°
FogTemperature 63°17°Rain chance 3%Wind 3 mph5 km/hNNETrack temperature 63°17°
Partly cloudyTemperature 80°27°Rain chance 3%Wind 5 mph9 km/hNETrack temperature 105°40°
87°30° 65°18° 2%Yellow flag
74°23° 62°17° 83%Red flag