- Track temp
- 64°F18°C
- Rain chance
- 0%
- Wind
- 6mph9km/hENE
- Density alt.
- 6,115ft1,864m
- Barometer 29.95 inHg1014 hPa steady
- Humidity 70%
Forecast updated · Open-Meteo
Hour by hour
ClearTemperature 57°14°Rain chance 0%Wind 6 mph9 km/hENETrack temperature 64°18°
ClearTemperature 53°12°Rain chance 0%Wind 1 mph2 km/hESETrack temperature 53°12°
OvercastTemperature 51°10°Rain chance 0%Wind 3 mph6 km/hSSETrack temperature 51°10°OvercastTemperature 49°9°Rain chance 0%Wind 7 mph11 km/hSTrack temperature 49°9°OvercastTemperature 48°9°Rain chance 0%Wind 6 mph10 km/hSTrack temperature 48°9°ClearTemperature 47°9°Rain chance 0%Wind 7 mph10 km/hSSETrack temperature 47°9°OvercastTemperature 45°7°Rain chance 0%Wind 5 mph8 km/hSTrack temperature 45°7°ClearTemperature 44°7°Rain chance 0%Wind 5 mph9 km/hWSWTrack temperature 44°7°Mostly clearTemperature 43°6°Rain chance 0%Wind 4 mph7 km/hSTrack temperature 43°6°OvercastTemperature 42°6°Rain chance 0%Wind 5 mph8 km/hSTrack temperature 42°6°OvercastTemperature 42°6°Rain chance 0%Wind 4 mph7 km/hSWTrack temperature 42°6°OvercastTemperature 40°4°Rain chance 1%Wind 2 mph3 km/hSWTrack temperature 40°4°OvercastTemperature 40°4°Rain chance 1%Wind 2 mph4 km/hWNWTrack temperature 40°4°
FogTemperature 40°5°Rain chance 1%Wind 2 mph3 km/hNWTrack temperature 40°5°FogTemperature 41°5°Rain chance 3%Wind 3 mph6 km/hNWTrack temperature 41°5°FogTemperature 41°5°Rain chance 3%Wind 2 mph3 km/hNNETrack temperature 41°5°FogTemperature 42°6°Rain chance 6%Wind 4 mph6 km/hNTrack temperature 44°7°FogTemperature 46°8°Rain chance 4%Wind 2 mph3 km/hNNETrack temperature 50°10°FogTemperature 47°8°Rain chance 2%Wind 3 mph4 km/hNTrack temperature 53°12°
OvercastTemperature 48°9°Rain chance 2%Wind 3 mph5 km/hNTrack temperature 57°14°OvercastTemperature 51°11°Rain chance 1%Wind 2 mph3 km/hNTrack temperature 67°19°OvercastTemperature 55°13°Rain chance 2%Wind 3 mph6 km/hNNWTrack temperature 79°26°
Partly cloudyTemperature 57°14°Rain chance 2%Wind 7 mph11 km/hNNWTrack temperature 76°25°Mostly clearTemperature 59°15°Rain chance 3%Wind 7 mph11 km/hNNWTrack temperature 73°23°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 3158°14° 43°6° 0%Green flag
- TomorrowNov 1
59°15° 40°4° 7%Green flag - MonNov 254°12° 42°6° 41%Red flag
- TueNov 362°17° 44°7° 12%Green flag
- WedNov 4
60°16° 40°5° 9%Red flag - ThuNov 556°13° 40°5° 14%Green flag
- FriNov 661°16° 40°5° 7%Green flagpartial
| Day | Flag | Sky | High / low | Rain | Gusts | Track temp | Density alt. | Sunrise · sunset |
|---|---|---|---|---|---|---|---|---|
| Today Oct 31 | Green flag | Fog | 58°14° 43°6° | 0% | 10 mph17 km/h NNW | 79°26° | 6,145 ft1,873 m | 7:26 AM · 6:00 PM |
| Tomorrow Nov 1 | Green flag | Light drizzle | 59°15° 40°4° | 7% 0.02 in0.4 mm | 13 mph21 km/h NW | 79°26° | 6,454 ft1,967 m | 6:28 AM · 4:58 PM |
| Mon Nov 2 | Red flagrain, gusty wind | Heavy drizzle | 54°12° 42°6° | 41% 0.35 in9 mm | 39 mph62 km/h N | 61°16° | 6,176 ft1,882 m | 6:29 AM · 4:57 PM |
| Tue Nov 3 | Green flag | Overcast | 62°17° 44°7° | 12% | 11 mph18 km/h S | 89°31° | 6,375 ft1,943 m | 6:30 AM · 4:56 PM |
| Wed Nov 4 | Red flagrain | Rain | 60°16° 40°5° | 9% 0.27 in6.9 mm | 24 mph39 km/h NNW | 80°26° | 6,346 ft1,934 m | 6:31 AM · 4:55 PM |
| Thu Nov 5 | Green flag | Clear | 56°13° 40°5° | 14% | 17 mph27 km/h E | 83°28° | 5,913 ft1,802 m | 6:32 AM · 4:54 PM |
| Fri Nov 6 | Green flag | Clear | 61°16° 40°5° | 7% | 20 mph32 km/h WSW | 90°32° | 6,413 ft1,955 m | 6:33 AM · 4:53 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 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 57°14° | 47°8° | 70% | 29.95 inHg1014 hPa | 6,115 ft1,864 m | 1.020 | 58 | 64°18° | 6 mph9 km/h ENE | 0% | |
| 53°12° | 44°7° | 72% | 29.98 inHg1015 hPa | 5,882 ft1,793 m | 1.028 | 52 | 53°12° | 1 mph2 km/h ESE | 0% | |
| 51°10° | 43°6° | 75% | 30.01 inHg1016 hPa | 5,717 ft1,743 m | 1.033 | 49 | 51°10° | 3 mph6 km/h SSE | 0% | |
| 49°9° | 44°7° | 83% | 30.07 inHg1018 hPa | 5,546 ft1,690 m | 1.038 | 50 | 49°9° | 7 mph11 km/h S | 0% | |
| 48°9° | 44°6° | 85% | 30.07 inHg1018 hPa | 5,498 ft1,676 m | 1.040 | 50 | 48°9° | 6 mph10 km/h S | 0% | |
| 47°9° | 41°5° | 79% | 30.08 inHg1019 hPa | 5,451 ft1,661 m | 1.041 | 46 | 47°9° | 7 mph10 km/h SSE | 0% | |
| 45°7° | 41°5° | 85% | 30.05 inHg1018 hPa | 5,368 ft1,636 m | 1.044 | 45 | 45°7° | 5 mph8 km/h S | 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 CNS
Pit box, all week
Every forecast hour for the next seven days at CNS: 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 CNS, and a heads-up three days out.
Getting to CNS
Dacono, Colorado
No street address published; directions go to the track itself.
We have not checked parking and camping here yet. The track’s own site has them: official site.
Facts
- Location
- Dacono, Colorado
- Layout
- 3/8-mile paved oval
- Length
- 0.375 mi (0.60 km)
- Surface
- Asphalt
- Opened
- 1965
- Series
- NASCAR Weekly Series divisions (12+ classes on Saturday nights), ARCA Menards Series West
- Signature events
- Legendary Billy Green 150
- Time zone
- America/Denver
- Elevation
- 5,046 ft (1,538 m)