NowOvercastTemperature 64°18°Rain chance 11%Wind 8 mph12 km/hESETrack temperature 69°21°
OvercastTemperature 63°17°Rain chance 13%Wind 5 mph8 km/hESETrack temperature 65°18°
OvercastTemperature 62°17°Rain chance 12%Wind 4 mph7 km/hETrack temperature 62°17°
OvercastTemperature 61°16°Rain chance 14%Wind 7 mph11 km/hETrack temperature 61°16°
OvercastTemperature 61°16°Rain chance 16%Wind 10 mph16 km/hETrack temperature 61°16°
OvercastTemperature 60°16°Rain chance 15%Wind 8 mph13 km/hESETrack temperature 60°16°
OvercastTemperature 60°16°Rain chance 12%Wind 5 mph8 km/hESETrack temperature 60°16°
OvercastTemperature 60°15°Rain chance 18%Wind 6 mph10 km/hESETrack temperature 60°15°
OvercastTemperature 59°15°Rain chance 14%Wind 4 mph7 km/hSSETrack temperature 59°15°
OvercastTemperature 59°15°Rain chance 7%Wind 3 mph4 km/hESETrack temperature 59°15°
OvercastTemperature 59°15°Rain chance 5%Wind 5 mph7 km/hSETrack temperature 59°15°
OvercastTemperature 57°14°Rain chance 4%Wind 4 mph7 km/hSETrack temperature 57°14°
Partly cloudyTemperature 56°14°Rain chance 4%Wind 4 mph7 km/hSETrack temperature 56°14°
OvercastTemperature 56°13°Rain chance 6%Wind 3 mph5 km/hSETrack temperature 56°13°
OvercastTemperature 57°14°Rain chance 7%Wind 3 mph4 km/hESETrack temperature 57°14°
OvercastTemperature 60°16°Rain chance 6%Wind 5 mph8 km/hESETrack temperature 60°16°
OvercastTemperature 60°16°Rain chance 5%Wind 5 mph8 km/hESETrack temperature 60°16°
OvercastTemperature 60°16°Rain chance 4%Wind 6 mph10 km/hSETrack temperature 62°17°
OvercastTemperature 62°16°Rain chance 3%Wind 8 mph12 km/hSSETrack temperature 64°18°
OvercastTemperature 63°17°Rain chance 4%Wind 7 mph11 km/hSSETrack temperature 69°20°
OvercastTemperature 65°18°Rain chance 7%Wind 7 mph11 km/hSETrack temperature 74°24°
OvercastTemperature 65°18°Rain chance 6%Wind 8 mph13 km/hSETrack temperature 75°24°
OvercastTemperature 65°19°Rain chance 2%Wind 8 mph13 km/hSETrack temperature 70°21°
OvercastTemperature 66°19°Rain chance 2%Wind 8 mph12 km/hESETrack 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 altitude1,425ft434mField elevation 984 ft
Air density1.175kg/m³95.9% of standard (RAD)
Water grains73grgrains per lb of dry air
Track temp (est.)69°F21°CDirt in 161 W/m² sun
Dew point58°F14°C81% humidity
Barometer30.18inHg1022hPaFalling over 3 h
SurfaceTackyTacky: some moisture in the top layer
Rain, last 48 h0.19in4.7mmat 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 3164°18°60°15° 77%Green flag
TomorrowNov 166°19°56°13° 14%Green flag
MonNov 276°24°61°16° 88%Red flag
TueNov 366°19°49°10° 77%Green flag
WedNov 465°18°46°8° 20%Green flag
ThuNov 559°15°48°9° 6%Green flag
FriNov 656°13°51°11° 5%Green flagpartial
Day
Flag
Sky
High / low
Rain
Gusts
Track temp
Density alt.
Sunrise · sunset
Today Oct 31
Green flag
Overcast
64°18°60°15°
77% 0.13 in3.3 mm
19 mph30 km/h ESE
77°25°
1,471 ft448 m
7:43 AM · 6:18 PM
Tomorrow Nov 1
Green flag
Fog
66°19°56°13°
14%
21 mph33 km/h SE
75°24°
1,595 ft486 m
6:45 AM · 5:17 PM
Mon Nov 2
Red flaglightning possible, rain
Thunderstorm
76°24°61°16°
88% 4.52 in114.8 mm
42 mph67 km/h S
82°28°
2,766 ft843 m
6:46 AM · 5:15 PM
Tue Nov 3
Green flag
Overcast
66°19°49°10°
77% 0.26 in6.6 mm
35 mph57 km/h WSW
74°23°
1,424 ft434 m
6:47 AM · 5:14 PM
Wed Nov 4
Green flag
Partly cloudy
65°18°46°8°
20%
22 mph36 km/h W
82°28°
1,794 ft547 m
6:48 AM · 5:13 PM
Thu Nov 5
Green flag
Overcast
59°15°48°9°
6%
14 mph22 km/h NE
71°22°
1,284 ft391 m
6:49 AM · 5:12 PM
Fri Nov 6
Green flag
Overcast
56°13°51°11°
5%
11 mph18 km/h NNW
62°17°
1,155 ft352 m
6:50 AM · 5:11 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
64°18°
58°14°
81%
30.18 inHg1022 hPa
1,425 ft434 m
1.175
73
69°21°
8 mph12 km/h ESE
11%
63°17°
58°14°
84%
30.20 inHg1023 hPa
1,344 ft410 m
1.178
74
65°18°
5 mph8 km/h ESE · gusts 14 mph23 km/h
13%
62°17°
58°15°
89%
30.22 inHg1023 hPa
1,264 ft385 m
1.180
75
62°17°
4 mph7 km/h E · gusts 12 mph19 km/h
12%
61°16°
58°14°
90%
30.22 inHg1024 hPa
1,206 ft368 m
1.182
74
61°16°
7 mph11 km/h E · gusts 15 mph24 km/h
14%
61°16°
58°14°
90%
30.20 inHg1023 hPa
1,207 ft368 m
1.182
73
61°16°
10 mph16 km/h E · gusts 19 mph30 km/h
16%
60°16°
57°14°
90%
30.21 inHg1023 hPa
1,163 ft354 m
1.184
72
60°16°
8 mph13 km/h ESE · gusts 16 mph26 km/h
15%
60°16°
58°14°
92%
30.22 inHg1023 hPa
1,147 ft350 m
1.184
73
60°16°
5 mph8 km/h ESE · gusts 13 mph22 km/h
12%
60°15°
57°14°
92%
30.21 inHg1023 hPa
1,137 ft347 m
1.185
72
60°15°
6 mph10 km/h ESE
18%
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 US 36
Pit box, all week
Every forecast hour for the next seven days at US 36: 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 US 36, and a heads-up three days out.
OvercastTemperature 61°16°Rain chance 14%Wind 7 mph11 km/hETrack temperature 61°16°
Partly cloudyTemperature 56°14°Rain chance 4%Wind 4 mph7 km/hSETrack temperature 56°14°
66°19° 56°13° 14%Green flag
76°24° 61°16° 88%Red flag
65°18° 46°8° 20%Green flag