NowOvercastTemperature 67°20°Rain chance 0%Wind 10 mph16 km/hENETrack temperature 78°26°
OvercastTemperature 64°18°Rain chance 1%Wind 6 mph10 km/hENETrack temperature 67°19°
OvercastTemperature 61°16°Rain chance 1%Wind 7 mph11 km/hENETrack temperature 61°16°
OvercastTemperature 60°16°Rain chance 1%Wind 5 mph8 km/hENETrack temperature 60°16°
OvercastTemperature 59°15°Rain chance 3%Wind 6 mph10 km/hNETrack temperature 59°15°
OvercastTemperature 58°15°Rain chance 3%Wind 5 mph8 km/hENETrack temperature 58°15°
OvercastTemperature 57°14°Rain chance 4%Wind 4 mph7 km/hNETrack temperature 57°14°
OvercastTemperature 57°14°Rain chance 4%Wind 8 mph12 km/hENETrack temperature 57°14°
OvercastTemperature 56°13°Rain chance 2%Wind 7 mph12 km/hNETrack temperature 56°13°
OvercastTemperature 54°12°Rain chance 2%Wind 7 mph12 km/hNETrack temperature 54°12°
OvercastTemperature 53°12°Rain chance 2%Wind 7 mph11 km/hENETrack temperature 53°12°
OvercastTemperature 53°11°Rain chance 3%Wind 6 mph9 km/hNETrack temperature 53°11°
OvercastTemperature 52°11°Rain chance 4%Wind 7 mph12 km/hNETrack temperature 52°11°
OvercastTemperature 51°11°Rain chance 3%Wind 6 mph10 km/hNETrack temperature 51°11°
OvercastTemperature 50°10°Rain chance 3%Wind 8 mph13 km/hNETrack temperature 50°10°
OvercastTemperature 49°10°Rain chance 2%Wind 6 mph10 km/hNETrack temperature 49°10°
OvercastTemperature 53°12°Rain chance 1%Wind 9 mph15 km/hNETrack temperature 57°14°
OvercastTemperature 57°14°Rain chance 1%Wind 13 mph21 km/hENETrack temperature 65°18°
OvercastTemperature 60°16°Rain chance 1%Wind 11 mph19 km/hENETrack temperature 73°23°
OvercastTemperature 62°17°Rain chance 1%Wind 9 mph15 km/hENETrack temperature 71°22°
OvercastTemperature 63°17°Rain chance 1%Wind 10 mph16 km/hENETrack temperature 73°23°
OvercastTemperature 64°18°Rain chance 1%Wind 9 mph14 km/hNETrack temperature 71°22°
OvercastTemperature 65°18°Rain chance 2%Wind 9 mph15 km/hENETrack temperature 71°22°
OvercastTemperature 65°19°Rain chance 2%Wind 8 mph14 km/hNETrack 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 altitude761ft232mField elevation 479 ft
Air density1.198kg/m³97.8% of standard (RAD)
Water grains35grgrains per lb of dry air
Track temp (est.)78°F26°CAsphalt in 304 W/m² sun
Dew point39°F4°C35% humidity
Barometer30.33inHg1027hPaFalling 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 3169°20°56°13° 4%Yellow flag
TomorrowNov 165°19°49°10° 4%Yellow flag
MonNov 274°23°55°13° 13%Green flag
TueNov 377°25°56°14° 2%Green flag
WedNov 477°25°61°16° 31%Green flag
ThuNov 575°24°62°17° 46%Red flag
FriNov 674°23°64°18° 31%Green flagpartial
Day
Flag
Sky
High / low
Rain
Gusts
Track temp
Density alt.
Sunrise · sunset
Today Oct 31
Yellow flaggusty wind
Overcast
69°20°56°13°
4%
26 mph41 km/h NE
92°33°
819 ft250 m
7:40 AM · 6:31 PM
Tomorrow Nov 1
Yellow flaggusty wind
Overcast
65°19°49°10°
4%
26 mph42 km/h NE
75°24°
543 ft166 m
6:41 AM · 5:30 PM
Mon Nov 2
Green flag
Overcast
74°23°55°13°
13%
23 mph36 km/h ENE
94°35°
1,323 ft403 m
6:42 AM · 5:29 PM
Tue Nov 3
Green flag
Overcast
77°25°56°14°
2%
25 mph40 km/h ENE
99°37°
1,659 ft506 m
6:43 AM · 5:28 PM
Wed Nov 4
Green flag
Light drizzle
77°25°61°16°
31% 0.01 in0.3 mm
25 mph40 km/h ESE
94°34°
1,863 ft568 m
6:44 AM · 5:27 PM
Thu Nov 5
Red flagrain
Drizzle
75°24°62°17°
46% 0.28 in7.2 mm
15 mph25 km/h ENE
92°33°
1,933 ft589 m
6:45 AM · 5:26 PM
Fri Nov 6
Green flag
Light drizzle
74°23°64°18°
31% 0.02 in0.6 mm
7 mph12 km/h ESE
91°33°
2,023 ft617 m
6:46 AM · 5:25 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
67°20°
39°4°
35%
30.33 inHg1027 hPa
761 ft232 m
1.198
35
78°26°
10 mph16 km/h ENE
0%
64°18°
40°5°
42%
30.35 inHg1028 hPa
545 ft166 m
1.206
37
67°19°
6 mph10 km/h ENE · gusts 15 mph25 km/h
1%
61°16°
40°4°
45%
30.35 inHg1028 hPa
367 ft112 m
1.212
36
61°16°
7 mph11 km/h ENE · gusts 17 mph27 km/h
1%
60°16°
41°5°
50%
30.35 inHg1028 hPa
282 ft86 m
1.215
38
60°16°
5 mph8 km/h ENE
1%
59°15°
43°6°
55%
30.38 inHg1029 hPa
195 ft59 m
1.218
41
59°15°
6 mph10 km/h NE
3%
58°15°
43°6°
58%
30.39 inHg1029 hPa
125 ft38 m
1.220
41
58°15°
5 mph8 km/h ENE · gusts 12 mph20 km/h
3%
57°14°
42°5°
56%
30.42 inHg1030 hPa
28 ft9 m
1.224
39
57°14°
4 mph7 km/h NE · gusts 11 mph18 km/h
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 CMP
Pit box, all week
Every forecast hour for the next seven days at CMP: 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 CMP, and a heads-up three days out.
OvercastTemperature 61°16°Rain chance 1%Wind 7 mph11 km/hENETrack temperature 61°16°
77°25° 61°16° 31%Green flag