Density Altitude

Handy density altitude charts were done for previous visits throughout the year to various drag race tracks. Copies are provided as examples of the effect of temperature, humidity, and barometer on density altitude.

Please note – We have since developed an online tool to help with density altitude calculations at your location. Check it out here: Air Density Online
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Sacramento Raceway, Sacramento, CA

F % barometer (Hg.)
temp hum 29.82 30.00 30.14
100 20 2870 2668 2511
90 25 2252 2049 1892
80 25 1592 1387 1230
80 30 1614 1410 1251
80 40 1659 1454 1295
70 40 975 770 611
60 50 311 106 -54
50 70 -355 -562 -722

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Infineon Raceway, Sonoma, California

F % barometer (Hg.)
temp hum 29.81 30.00 30.13
90 35 2325 2110 1963
80 40 1670 1454 1307
70 40 986 770 622
70 50 1018 802 654
70 60 1051 834 686
60 60 346 128 -20
50 80 -328 -546 -695
40 85 -1043 -1262 -1411

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Rockingham, North Carolina – Altitude 375ft.

F % barometer (Hg.)
temp hum 29.2 29.6 30.0
80 60 1430 1316 1204
70 70 752 638 525
60 80 59 -55 -168
50 85 -653 -767 -881

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Rockingham, North Carolina (2) – Altitude 375ft.

F % barometer (Hg.)
temp hum 29.2 29.6 30.0
70 35 1673 1211 754
60 40 1006 542 83
50 50 333 -133 -593
40 70 -347 -815 -1278

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Bakersfield, California – Altitude 625ft.

F % barometer (Hg.)
temp hum 29.7 30.0 30.5
10 20 3010 2670 2100
90 20 2360 2020 1460
90 30 2420 2080 1520
80 30 1750 1410 650
70 40 1110 770 205
60 50 450 105 -460
50 70 -220 -560 -1130
40 80 -920 -1270 -1840