- Track temp
- 66°F19°C
- Rain chance
- 0%
- Wind
- 3mph4km/hENE
- Density alt.
- 318ft97m
- Barometer 30.40 inHg1029 hPa steady
- Humidity 37%
- Cloud 69%
- UV 0
Forecast updated · Open-Meteo
Hour by hour
Partly cloudyTemperature 63°17°Rain chance 0%Wind 3 mph4 km/hENETrack temperature 66°19°
OvercastTemperature 59°15°Rain chance 0%Wind 5 mph8 km/hETrack temperature 59°15°OvercastTemperature 56°13°Rain chance 0%Wind 5 mph8 km/hETrack temperature 56°13°OvercastTemperature 55°13°Rain chance 0%Wind 4 mph7 km/hESETrack temperature 55°13°OvercastTemperature 53°12°Rain chance 0%Wind 4 mph7 km/hENETrack temperature 53°12°OvercastTemperature 51°11°Rain chance 0%Wind 4 mph6 km/hETrack temperature 51°11°OvercastTemperature 51°10°Rain chance 1%Wind 4 mph7 km/hENETrack temperature 51°10°OvercastTemperature 49°10°Rain chance 2%Wind 2 mph3 km/hENETrack temperature 49°10°OvercastTemperature 49°9°Rain chance 1%Wind 4 mph7 km/hNETrack temperature 49°9°OvercastTemperature 48°9°Rain chance 4%Wind 2 mph3 km/hNTrack temperature 48°9°OvercastTemperature 46°8°Rain chance 2%Wind 5 mph7 km/hNETrack temperature 46°8°OvercastTemperature 46°8°Rain chance 1%Wind 1 mph2 km/hNNETrack temperature 46°8°OvercastTemperature 45°7°Rain chance 2%Wind 3 mph5 km/hNETrack temperature 45°7°OvercastTemperature 44°7°Rain chance 2%Wind 4 mph6 km/hNNWTrack temperature 44°7°
OvercastTemperature 43°6°Rain chance 2%Wind 3 mph4 km/hNNETrack temperature 43°6°OvercastTemperature 46°8°Rain chance 2%Wind 0 mph1 km/hSETrack temperature 50°10°OvercastTemperature 51°11°Rain chance 3%Wind 2 mph4 km/hNNETrack temperature 64°18°OvercastTemperature 56°13°Rain chance 3%Wind 3 mph4 km/hNNETrack temperature 69°20°OvercastTemperature 58°15°Rain chance 3%Wind 5 mph8 km/hNETrack temperature 77°25°Partly cloudyTemperature 62°17°Rain chance 3%Wind 7 mph12 km/hENETrack temperature 80°27°OvercastTemperature 64°18°Rain chance 3%Wind 6 mph9 km/hENETrack temperature 88°31°OvercastTemperature 65°19°Rain chance 3%Wind 6 mph10 km/hENETrack temperature 87°30°Partly cloudyTemperature 66°19°Rain chance 3%Wind 7 mph11 km/hENETrack temperature 82°28°OvercastTemperature 66°19°Rain chance 2%Wind 6 mph10 km/hENETrack temperature 75°24°Hours in your time zone (the track's when they match). Track temperature is an estimate.
The racer numbers
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.
Day by day
- TodayOct 3167°19° 41°5° 0%Green flag
- TomorrowNov 166°19° 43°6° 4%Green flag
- MonNov 265°18° 46°8° 4%Green flag
- TueNov 374°23° 48°9° 1%Green flag
- WedNov 475°24° 54°12° 16%Green flag
- ThuNov 572°22° 58°15° 49%Green flag
- FriNov 6
68°20° 63°17° 37%Green flagpartial
| Day | Flag | Sky | High / low | Rain | Gusts | Track temp | Density alt. | Sunrise · sunset |
|---|---|---|---|---|---|---|---|---|
| Today Oct 31 | Green flag | Overcast | 67°19° 41°5° | 0% | 10 mph17 km/h ENE | 93°34° | 563 ft172 m | 7:38 AM · 6:22 PM |
| Tomorrow Nov 1 | Green flag | Overcast | 66°19° 43°6° | 4% | 11 mph18 km/h ENE | 88°31° | 469 ft143 m | 6:39 AM · 5:21 PM |
| Mon Nov 2 | Green flag | Overcast | 65°18° 46°8° | 4% | 12 mph19 km/h NE | 86°30° | 593 ft181 m | 6:40 AM · 5:20 PM |
| Tue Nov 3 | Green flag | Partly cloudy | 74°23° 48°9° | 1% | 7 mph12 km/h E | 102°39° | 1,311 ft400 m | 6:41 AM · 5:19 PM |
| Wed Nov 4 | Green flag | Overcast | 75°24° 54°12° | 16% | 13 mph22 km/h ESE | 90°32° | 1,602 ft488 m | 6:42 AM · 5:18 PM |
| Thu Nov 5 | Green flag | Overcast | 72°22° 58°15° | 49% 0.02 in0.4 mm | 11 mph17 km/h ENE | 82°28° | 1,610 ft491 m | 6:43 AM · 5:17 PM |
| Fri Nov 6 | Green flag | Light drizzle | 68°20° 63°17° | 37% 0.14 in3.6 mm | 8 mph12 km/h E | 78°25° | 1,594 ft486 m | 6:44 AM · 5:16 PM |
Flags judge the racing hours, 9 am to 10 pm at the track. Days marked partial are at the edge of the forecast.
Every hour, every number
Today’s remaining 6 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 63°17° | 36°2° | 37% | 30.40 inHg1029 hPa | 318 ft97 m | 1.214 | 31 | 66°19° | 3 mph4 km/h ENE | 0% | |
| 59°15° | 33°1° | 38% | 30.41 inHg1030 hPa | 38 ft12 m | 1.224 | 28 | 59°15° | 5 mph8 km/h E | 0% | |
| 56°13° | 36°2° | 47% | 30.40 inHg1030 hPa | -133 ft-41 m | 1.230 | 31 | 56°13° | 5 mph8 km/h E | 0% | |
| 55°13° | 37°3° | 52% | 30.42 inHg1030 hPa | -235 ft-72 m | 1.234 | 33 | 55°13° | 4 mph7 km/h ESE | 0% | |
| 53°12° | 37°3° | 55% | 30.44 inHg1031 hPa | -348 ft-106 m | 1.238 | 33 | 53°12° | 4 mph7 km/h ENE | 0% | |
| 51°11° | 38°3° | 59% | 30.46 inHg1032 hPa | -492 ft-150 m | 1.243 | 33 | 51°11° | 4 mph6 km/h E | 0% |
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.
Plan the whole week at VIR
Pit box, all week
Every forecast hour for the next seven days at VIR: 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 VIR, and a heads-up three days out.
A year at VIR
Typical for October here: highs around 71°22°, lows 51°11°, rain on 18% of days.
5-year averages from the Open-Meteo archive at the track's coordinates.
Getting to VIR
1245 Pine Tree Road, Alton, VA 24520
Parking
Parking is free at most VIR events; check the event listing for any parking fee before you arrive. virnow.com
Camping On site
General tent and RV camping on unpaved areas at most spectator events, paid per event at the security gate; electric hookups extra. Premium RV sites with hookups by reservation. Showers and restrooms on site. virnow.com
Good to know
Personal golf carts and other off-road vehicles must be registered with VIR and display a current pass; golf carts can be rented. virnow.com
From the track’s own pages, checked October 2026. Prices and rules change by event, so confirm before you go.
Facts
- Location
- Alton, Virginia
- Layout
- 3.27-mile, 17-turn full course
- Length
- 3.27 mi (5.26 km)
- Surface
- Asphalt
- Opened
- 1957
- Series
- IMSA, SRO
- Signature events
- Michelin GT Challenge at VIR
- Time zone
- America/New York
- Elevation
- 420 ft (128 m)