NowOvercastTemperature 64°18°Rain chance 18%Wind 8 mph13 km/hSETrack temperature 70°21°
OvercastTemperature 62°17°Rain chance 18%Wind 10 mph17 km/hSETrack temperature 62°17°
Light rainTemperature 61°16°Rain chance 18%Wind 6 mph10 km/hSETrack temperature 61°16°
OvercastTemperature 60°15°Rain chance 13%Wind 7 mph11 km/hSETrack temperature 60°15°
OvercastTemperature 59°15°Rain chance 8%Wind 7 mph11 km/hSETrack temperature 59°15°
OvercastTemperature 59°15°Rain chance 7%Wind 7 mph11 km/hSETrack temperature 59°15°
OvercastTemperature 59°15°Rain chance 3%Wind 9 mph15 km/hSETrack temperature 59°15°
OvercastTemperature 59°15°Rain chance 2%Wind 9 mph14 km/hSETrack temperature 59°15°
OvercastTemperature 59°15°Rain chance 2%Wind 9 mph14 km/hSSETrack temperature 59°15°
OvercastTemperature 59°15°Rain chance 5%Wind 7 mph11 km/hSTrack temperature 59°15°
OvercastTemperature 59°15°Rain chance 4%Wind 6 mph10 km/hSTrack temperature 59°15°
OvercastTemperature 57°14°Rain chance 2%Wind 5 mph8 km/hSSETrack temperature 57°14°
OvercastTemperature 58°14°Rain chance 2%Wind 6 mph9 km/hSTrack temperature 58°14°
OvercastTemperature 56°13°Rain chance 2%Wind 4 mph7 km/hSETrack temperature 56°13°
OvercastTemperature 58°15°Rain chance 2%Wind 5 mph8 km/hSSETrack temperature 58°15°
OvercastTemperature 58°15°Rain chance 2%Wind 6 mph10 km/hSSETrack temperature 58°15°
FogTemperature 58°14°Rain chance 2%Wind 6 mph10 km/hSSETrack temperature 58°15°
OvercastTemperature 59°15°Rain chance 1%Wind 8 mph13 km/hSSETrack temperature 64°18°
OvercastTemperature 60°16°Rain chance 1%Wind 9 mph14 km/hSSETrack temperature 66°19°
OvercastTemperature 61°16°Rain chance 1%Wind 10 mph16 km/hSSETrack temperature 64°18°
OvercastTemperature 62°17°Rain chance 1%Wind 10 mph17 km/hSSETrack temperature 67°20°
OvercastTemperature 63°17°Rain chance 1%Wind 9 mph15 km/hSSETrack temperature 74°23°
OvercastTemperature 64°18°Rain chance 1%Wind 11 mph18 km/hSSETrack temperature 75°24°
OvercastTemperature 62°17°Rain chance 2%Wind 10 mph16 km/hSSETrack temperature 64°18°
Hours in your time zone (the track's when they match). Track temperature is an estimate.
Pit box
The racer numbers
Density altitude2,150ft655mField elevation 1,532 ft
Air density1.150kg/m³93.9% of standard (RAD)
Water grains77grgrains per lb of dry air
Track temp (est.)70°F21°CDirt in 200 W/m² sun
Dew point59°F15°C83% humidity
Barometer30.14inHg1021hPaRising over 3 h
SurfaceWetWet: heavy rain or saturated ground
Rain, last 48 h0.5in12.6mmat 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°58°14° 48%Red flag
TomorrowNov 164°18°56°13° 14%Yellow flag
MonNov 275°24°59°15° 73%Yellow flag
TueNov 363°17°50°10° 62%Yellow flag
WedNov 466°19°48°9° 12%Green flag
ThuNov 559°15°48°9° 6%Green flag
FriNov 662°17°48°9° 6%Green flagpartial
Day
Flag
Sky
High / low
Rain
Gusts
Track temp
Density alt.
Sunrise · sunset
Today Oct 31
Red flagrain
Light rain
64°18°58°14°
48% 0.09 in2.2 mm
29 mph46 km/h SSE
76°25°
2,150 ft655 m
7:57 AM · 6:31 PM
Tomorrow Nov 1
Yellow flaggusty wind
Light drizzle
64°18°56°13°
14% 0.02 in0.4 mm
28 mph46 km/h SSE
75°24°
2,193 ft668 m
6:58 AM · 5:29 PM
Mon Nov 2
Yellow flaggusty wind
Light drizzle
75°24°59°15°
73% 0.09 in2.3 mm
47 mph76 km/h S
85°30°
3,569 ft1,088 m
6:59 AM · 5:28 PM
Tue Nov 3
Yellow flaggusty wind
Clear
63°17°50°10°
62% 0.03 in0.8 mm
34 mph55 km/h NW
77°25°
2,262 ft689 m
7:00 AM · 5:27 PM
Wed Nov 4
Green flag
Overcast
66°19°48°9°
12%
18 mph29 km/h N
86°30°
2,529 ft771 m
7:01 AM · 5:26 PM
Thu Nov 5
Green flag
Overcast
59°15°48°9°
6%
21 mph34 km/h NE
73°23°
1,938 ft591 m
7:02 AM · 5:25 PM
Fri Nov 6
Green flag
Overcast
62°17°48°9°
6%
7 mph12 km/h WNW
82°28°
2,235 ft681 m
7:04 AM · 5:24 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
64°18°
59°15°
83%
30.14 inHg1021 hPa
2,150 ft655 m
1.150
77
70°21°
8 mph13 km/h SE
18%
62°17°
58°15°
88%
30.14 inHg1021 hPa
2,016 ft614 m
1.154
76
62°17°
10 mph17 km/h SE · gusts 18 mph30 km/h
18%
61°16°
59°15°
94%
30.16 inHg1021 hPa
1,948 ft594 m
1.157
78
61°16°
6 mph10 km/h SE · gusts 14 mph23 km/h
18%
60°15°
57°14°
93%
30.15 inHg1021 hPa
1,871 ft570 m
1.159
74
60°15°
7 mph11 km/h SE · gusts 22 mph35 km/h
13%
59°15°
58°14°
94%
30.16 inHg1021 hPa
1,854 ft565 m
1.160
74
59°15°
7 mph11 km/h SE · gusts 19 mph31 km/h
8%
59°15°
57°14°
94%
30.15 inHg1021 hPa
1,844 ft562 m
1.160
74
59°15°
7 mph11 km/h SE · gusts 18 mph29 km/h
7%
59°15°
58°14°
95%
30.16 inHg1021 hPa
1,836 ft560 m
1.161
75
59°15°
9 mph15 km/h SE · gusts 21 mph33 km/h
3%
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 Belleville
Pit box, all week
Every forecast hour for the next seven days at Belleville: 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 Belleville, and a heads-up three days out.
Light rainTemperature 61°16°Rain chance 18%Wind 6 mph10 km/hSETrack temperature 61°16°
OvercastTemperature 60°15°Rain chance 13%Wind 7 mph11 km/hSETrack temperature 60°15°
FogTemperature 58°14°Rain chance 2%Wind 6 mph10 km/hSSETrack temperature 58°15°
64°18° 58°14° 48%Red flag
64°18° 56°13° 14%Yellow flag
63°17° 50°10° 62%Yellow flag