- Track temp
- 71°F22°C
- Rain chance
- 0%
- Wind
- 4mph6km/hNNW
- Density alt.
- -226ft-69m
- Barometer 29.93 inHg1014 hPa falling
- Humidity 80%
- Cloud 99%
- UV 2
Forecast updated · Open-Meteo
Hour by hour
OvercastTemperature 53°12°Rain chance 0%Wind 4 mph6 km/hNNWTrack temperature 71°22°OvercastTemperature 54°12°Rain chance 1%Wind 4 mph7 km/hNWTrack temperature 64°18°OvercastTemperature 52°11°Rain chance 1%Wind 4 mph6 km/hNWTrack temperature 56°13°
Partly cloudyTemperature 50°10°Rain chance 1%Wind 4 mph7 km/hNNWTrack temperature 50°10°
OvercastTemperature 48°9°Rain chance 2%Wind 6 mph9 km/hNWTrack temperature 48°9°OvercastTemperature 47°8°Rain chance 2%Wind 4 mph7 km/hNWTrack temperature 47°8°
Mostly clearTemperature 46°8°Rain chance 2%Wind 5 mph8 km/hNWTrack temperature 46°8°ClearTemperature 44°7°Rain chance 2%Wind 4 mph6 km/hNWTrack temperature 44°7°ClearTemperature 43°6°Rain chance 2%Wind 4 mph6 km/hWNWTrack temperature 43°6°ClearTemperature 42°6°Rain chance 2%Wind 3 mph5 km/hWNWTrack temperature 42°6°ClearTemperature 42°5°Rain chance 2%Wind 3 mph5 km/hWTrack temperature 42°5°ClearTemperature 41°5°Rain chance 2%Wind 5 mph8 km/hWTrack temperature 41°5°ClearTemperature 41°5°Rain chance 2%Wind 4 mph7 km/hWTrack temperature 41°5°ClearTemperature 40°5°Rain chance 2%Wind 2 mph4 km/hWTrack temperature 40°5°ClearTemperature 40°4°Rain chance 3%Wind 3 mph4 km/hSTrack temperature 40°4°ClearTemperature 39°4°Rain chance 3%Wind 6 mph10 km/hSSETrack temperature 39°4°ClearTemperature 39°4°Rain chance 3%Wind 6 mph10 km/hSSETrack temperature 39°4°
ClearTemperature 37°3°Rain chance 2%Wind 3 mph5 km/hSETrack temperature 37°3°ClearTemperature 39°4°Rain chance 2%Wind 2 mph3 km/hESETrack temperature 42°6°ClearTemperature 43°6°Rain chance 1%Wind 2 mph4 km/hSETrack temperature 54°12°ClearTemperature 47°8°Rain chance 1%Wind 2 mph3 km/hSSETrack temperature 64°18°ClearTemperature 49°9°Rain chance 1%Wind 1 mph2 km/hSSETrack temperature 71°22°ClearTemperature 51°10°Rain chance 1%Wind 1 mph1 km/hSWTrack temperature 75°24°ClearTemperature 53°11°Rain chance 1%Wind 0 mph1 km/hNTrack temperature 77°25°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 3154°12° 39°4° 2%Green flag
- TomorrowNov 154°12° 37°3° 3%Green flag
- MonNov 256°13° 38°3° 4%Green flag
- TueNov 360°16° 48°9° 4%Green flag
- WedNov 458°15° 44°7° 51%Green flag
- ThuNov 563°17° 51°10° 51%Green flag
- FriNov 659°15° 52°11° 59%Green flagpartial
| Day | Flag | Sky | High / low | Rain | Gusts | Track temp | Density alt. | Sunrise · sunset |
|---|---|---|---|---|---|---|---|---|
| Today Oct 31 | Green flag | Overcast | 54°12° 39°4° | 2% | 11 mph18 km/h NW | 72°22° | -200 ft-61 m | 7:47 AM · 6:01 PM |
| Tomorrow Nov 1 | Green flag | Clear | 54°12° 37°3° | 3% | 9 mph15 km/h S | 77°25° | -408 ft-124 m | 6:49 AM · 4:59 PM |
| Mon Nov 2 | Green flag | Overcast | 56°13° 38°3° | 4% | 4 mph6 km/h NNW | 71°21° | -387 ft-118 m | 6:50 AM · 4:58 PM |
| Tue Nov 3 | Green flag | Overcast | 60°16° 48°9° | 4% | 6 mph10 km/h N | 77°25° | 65 ft20 m | 6:52 AM · 4:56 PM |
| Wed Nov 4 | Green flag | Overcast | 58°15° 44°7° | 51% | 9 mph14 km/h ESE | 75°24° | -174 ft-53 m | 6:53 AM · 4:55 PM |
| Thu Nov 5 | Green flag | Overcast | 63°17° 51°10° | 51% 0.01 in0.3 mm | 16 mph26 km/h SSE | 80°27° | 250 ft76 m | 6:54 AM · 4:54 PM |
| Fri Nov 6 | Green flag | Overcast | 59°15° 52°11° | 59% 0.06 in1.5 mm | 25 mph40 km/h SW | 77°25° | -253 ft-77 m | 6:56 AM · 4:52 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 9 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 53°12° | 47°9° | 80% | 29.93 inHg1014 hPa | -226 ft-69 m | 1.233 | 49 | 71°22° | 4 mph6 km/h NNW | 0% | |
| 54°12° | 47°9° | 80% | 29.92 inHg1013 hPa | -200 ft-61 m | 1.232 | 49 | 64°18° | 4 mph7 km/h NW | 1% | |
| 52°11° | 48°9° | 86% | 29.93 inHg1013 hPa | -297 ft-91 m | 1.236 | 50 | 56°13° | 4 mph6 km/h NW | 1% | |
| 50°10° | 47°8° | 89% | 29.93 inHg1014 hPa | -472 ft-144 m | 1.242 | 47 | 50°10° | 4 mph7 km/h NNW | 1% | |
| 48°9° | 45°7° | 88% | 29.95 inHg1014 hPa | -617 ft-188 m | 1.247 | 43 | 48°9° | 6 mph9 km/h NW | 2% | |
| 47°8° | 45°7° | 92% | 29.95 inHg1014 hPa | -696 ft-212 m | 1.250 | 44 | 47°8° | 4 mph7 km/h NW | 2% | |
| 46°8° | 43°6° | 89% | 29.94 inHg1014 hPa | -781 ft-238 m | 1.253 | 40 | 46°8° | 5 mph8 km/h NW | 2% | |
| 44°7° | 41°5° | 89% | 29.94 inHg1014 hPa | -883 ft-269 m | 1.257 | 38 | 44°7° | 4 mph6 km/h NW | 2% | |
| 43°6° | 40°5° | 90% | 29.94 inHg1014 hPa | -973 ft-297 m | 1.260 | 36 | 43°6° | 4 mph6 km/h WNW | 2% |
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 Portland
Pit box, all week
Every forecast hour for the next seven days at Portland: 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 Portland, and a heads-up three days out.
A year at Portland
Typical for October here: highs around 64°18°, lows 48°9°, rain on 41% of days.
5-year averages from the Open-Meteo archive at the track's coordinates.
Getting to Portland
1940 N Victory Blvd, Portland, OR 97217
Parking
Varies by event. For the 2026 IndyCar weekend, Beaches, Broadacre and Infield lots (Infield for Grandstand K buyers only) could be bought in advance; prices not published. raceportland.com
Camping On site
No camping hookups at PIR; dry camping is offered at some events only, with a set departure time. Quiet hours 10 p.m. to 8 a.m. On IndyCar weekend, camping is only in the RV Club with its pass. portlandraceway.com
Good to know
Coolers are allowed but glass is not; no outside alcohol or cannabis. 2026 IndyCar gates opened at 8:30 a.m. raceportland.com
From the track’s own pages, checked October 2026. Prices and rules change by event, so confirm before you go.
Facts
- Location
- Portland, Oregon
- Layout
- 1.964-mile, 12-turn road course
- Length
- 1.964 mi (3.16 km)
- Surface
- Asphalt
- Opened
- 1961
- Series
- IndyCar
- Signature events
- Grand Prix of Portland
- Time zone
- America/Los Angeles
- Elevation
- 13 ft (4 m)