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Free air density info by track for tuning including race track map.
Other tuning weather info: density altitude, dew point, temp, humidity, grains, uncorrected & corrected barometer, & imperial / metric units.
For US tracks: yesterdays weather, current weather, & weather forecast.
Airdensityonline.com is a recognized partner / contributor to Racingjunk.com.

https://airdensityonline.com/us-track-list/
https://airdensityonline.com/tracks-worldwide/

Bob Szabo
[email protected]
(916) 400 3953 (new phone no.)

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Site just expanded to provide historic air density data by track location. A racer can retrieve past weather data in air density, density altitude units to reconstruct tuning records.

Bob Szabo

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Free Indianapolis 500 hourly air density data for tuning & tuning forecast for 2019
Indianapolis 500 practice: May 14-17, 2019
Indianapolis 500 qualifying: Sat May 18, Sun May 19
Indianapolis 500 practice: Mon May 20
Indy 500 Miller Lite Carb Day: Fri May 24
Indy 500 Firestone Legends Day: Sat May 25
103rd running of the Indianapolis 500 high speed circle race: Sun May 26

links:
current imperial weather units with map & weather forecast description: https://airdensityonline.com/track-r...otor_Speedway/
current metric weather units with map & weather forecast description: https://airdensityonline.com/track-r...otor_Speedway/
historical weather hourly data example: https://airdensityonline.com/track-h...ay/2019-05-01/
forecast weather hourly data: https://airdensityonline.com/track-f...otor_Speedway/

Air density data for tuning to those spark plug readings, aerodynamics, & tire drift.

Bob Szabo
[email protected]
(916) 400 3953

bobszabo

link to the Indy 500 air density, density altitude, grains, forecast, historic, & metric data:

https://airdensityonline.com/track-r...otor_Speedway/

bobszabo

link to free air density tuning info for NHRA National Event Drag Racing, Chicago, May 30-June2: air density, density altitude, grains, forecast, historic, & metric data "for good spark plug readings":

https://airdensityonline.com/track-r...te_66_Raceway/

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link to free air density tuning info for NHRA Mello Yellow National Event Drag Racing, Epping, New Hampshire, July 5-7: air density, density altitude, grains, forecast, historic, & metric data "for good spark plug readings":
https://airdensityonline.com/track-r...gland_Dragway/

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link to free air density tuning info for IHRA 1/4 mile drag racing at US 131 Motorsports Park Summit Sportsman Spectacular Event, Martin, Mi, USA, July 12-14: map location, track elevation, air density, density altitude, grains, forecast, historic, & metric data for “good spark plug readings”:
https://airdensityonline.com/track-r...orsports_Park/

bobszabo

link to free air density tuning info for NHRA 1/4 mile drag racing at Denver (Morrison) July 19-21: map location, track elevation, air density, density altitude, grains, forecast, historic, & metric data for “good spark plug readings”:
https://airdensityonline.com/track-r...mere_Speedway/
air density forecast including grains, DA, wind, temp, pressure, humidity:
https://airdensityonline.com/track-f...mere_Speedway/

bobszabo

link to free air density tuning info for IHRA drag racing at Xtreme Raceway Park, Ferris, Texas, just southeast of Dallas. July 26, July 28: map location, track elevation, air density, density altitude, grains, forecast, historic, & metric data for “good spark plug readings”:
https://airdensityonline.com/track-r..._Raceway_Park/