NowOvercastTemperature 67°20°Rain chance 4%Wind 6 mph9 km/hETrack temperature 74°23°
OvercastTemperature 65°18°Rain chance 4%Wind 5 mph9 km/hSETrack temperature 68°20°
OvercastTemperature 62°17°Rain chance 4%Wind 7 mph12 km/hETrack temperature 62°17°
OvercastTemperature 60°15°Rain chance 3%Wind 6 mph10 km/hESETrack temperature 60°15°
OvercastTemperature 58°15°Rain chance 4%Wind 6 mph10 km/hSETrack temperature 58°15°
OvercastTemperature 58°14°Rain chance 4%Wind 5 mph9 km/hSSETrack temperature 58°14°
OvercastTemperature 57°14°Rain chance 7%Wind 7 mph11 km/hSSETrack temperature 57°14°
OvercastTemperature 56°13°Rain chance 7%Wind 6 mph9 km/hSTrack temperature 56°13°
OvercastTemperature 56°14°Rain chance 10%Wind 4 mph6 km/hESETrack temperature 56°14°
OvercastTemperature 56°14°Rain chance 10%Wind 4 mph6 km/hSETrack temperature 56°14°
OvercastTemperature 56°13°Rain chance 11%Wind 8 mph13 km/hSSETrack temperature 56°13°
OvercastTemperature 55°13°Rain chance 9%Wind 6 mph10 km/hSSETrack temperature 55°13°
OvercastTemperature 54°12°Rain chance 12%Wind 2 mph4 km/hSSWTrack temperature 54°12°
OvercastTemperature 54°12°Rain chance 11%Wind 3 mph5 km/hETrack temperature 54°12°
OvercastTemperature 55°13°Rain chance 10%Wind 5 mph7 km/hNETrack temperature 55°13°
OvercastTemperature 55°13°Rain chance 16%Wind 5 mph9 km/hSETrack temperature 55°13°
OvercastTemperature 56°13°Rain chance 18%Wind 5 mph8 km/hESETrack temperature 56°13°
OvercastTemperature 56°14°Rain chance 18%Wind 5 mph8 km/hSETrack temperature 57°14°
OvercastTemperature 57°14°Rain chance 19%Wind 6 mph10 km/hSETrack temperature 59°15°
OvercastTemperature 59°15°Rain chance 24%Wind 8 mph12 km/hSETrack temperature 61°16°
OvercastTemperature 60°15°Rain chance 21%Wind 5 mph9 km/hSETrack temperature 62°17°
OvercastTemperature 60°16°Rain chance 23%Wind 4 mph6 km/hSETrack temperature 63°17°
OvercastTemperature 59°15°Rain chance 22%Wind 4 mph6 km/hESETrack temperature 61°16°
OvercastTemperature 60°15°Rain chance 18%Wind 4 mph7 km/hESETrack temperature 61°16°
Hours in your time zone (the track's when they match). Track temperature is an estimate.
Pit box
The racer numbers
Density altitude1,151ft351mField elevation 689 ft
Air density1.184kg/m³96.7% of standard (RAD)
Water grains50grgrains per lb of dry air
Track temp (est.)74°F23°CDirt in 199 W/m² sun
Dew point48°F9°C50% humidity
Barometer30.25inHg1024hPaFalling 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 3168°20°51°11° 20%Green flag
TomorrowNov 160°16°54°12° 24%Green flag
MonNov 263°17°54°12° 11%Yellow flag
TueNov 369°21°61°16° 57%Yellow flag
WedNov 465°19°53°12° 50%Green flag
ThuNov 562°16°50°10° 18%Green flag
FriNov 655°13°53°12° 18%Green flagpartial
Day
Flag
Sky
High / low
Rain
Gusts
Track temp
Density alt.
Sunrise · sunset
Today Oct 31
Green flag
Overcast
68°20°51°11°
20%
21 mph33 km/h ESE
83°28°
1,210 ft369 m
7:22 AM · 5:53 PM
Tomorrow Nov 1
Green flag
Drizzle
60°16°54°12°
24% 0.04 in1.1 mm
19 mph30 km/h SE
63°17°
669 ft204 m
6:23 AM · 4:52 PM
Mon Nov 2
Yellow flaggusty wind
Overcast
63°17°54°12°
11% <0.01 in0.1 mm
40 mph65 km/h SSE
65°18°
1,257 ft383 m
6:24 AM · 4:50 PM
Tue Nov 3
Yellow flaggusty wind
Drizzle
69°21°61°16°
57% 0.23 in5.8 mm
47 mph76 km/h S
75°24°
1,836 ft560 m
6:25 AM · 4:49 PM
Wed Nov 4
Green flag
Overcast
65°19°53°12°
50% 0.04 in1 mm
22 mph36 km/h WSW
77°25°
1,466 ft447 m
6:26 AM · 4:48 PM
Thu Nov 5
Green flag
Overcast
62°16°50°10°
18%
14 mph23 km/h N
77°25°
1,135 ft346 m
6:28 AM · 4:47 PM
Fri Nov 6
Green flag
Light drizzle
55°13°53°12°
18% 0.01 in0.3 mm
15 mph25 km/h N
58°14°
787 ft240 m
6:29 AM · 4:46 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
67°20°
48°9°
50%
30.25 inHg1024 hPa
1,151 ft351 m
1.184
50
74°23°
6 mph9 km/h E
4%
65°18°
46°8°
50%
30.26 inHg1025 hPa
975 ft297 m
1.190
46
68°20°
5 mph9 km/h SE
4%
62°17°
43°6°
50%
30.31 inHg1026 hPa
703 ft214 m
1.200
41
62°17°
7 mph12 km/h E
4%
60°15°
44°7°
57%
30.31 inHg1026 hPa
574 ft175 m
1.205
43
60°15°
6 mph10 km/h ESE
3%
58°15°
46°8°
63%
30.32 inHg1027 hPa
493 ft150 m
1.207
46
58°15°
6 mph10 km/h SE
4%
58°14°
46°8°
64%
30.30 inHg1026 hPa
473 ft144 m
1.208
46
58°14°
5 mph9 km/h SSE · gusts 13 mph21 km/h
4%
57°14°
46°8°
68%
30.31 inHg1026 hPa
407 ft124 m
1.210
47
57°14°
7 mph11 km/h SSE · gusts 16 mph25 km/h
7%
56°13°
47°8°
71%
30.31 inHg1026 hPa
369 ft112 m
1.212
48
56°13°
6 mph9 km/h S · gusts 15 mph24 km/h
7%
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 Fairbury
Pit box, all week
Every forecast hour for the next seven days at Fairbury: 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 Fairbury, and a heads-up three days out.
OvercastTemperature 62°17°Rain chance 4%Wind 7 mph12 km/hETrack temperature 62°17°
60°16° 54°12° 24%Green flag