Saluda, Virginia · field elev 30 ft

Density Altitude at Hummel Field (W75)

Hummel Field sits at 30 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 1,704 ft — heat still trims performance, but the field rarely turns high-and-hot.

worst typical month: July · ≈1,704 ft station: N · 12 mi away normals vintage 1991–2020

Typical density altitude by month

From NOAA 1991–2020 monthly normals at N (12 mi from the field) · standard pressure, dry air
Month Avg temp °F DA at avg temp Afternoon high °F DA on a typical afternoon
January 38.1 −1,356 ft 46.9 −753 ft
February 39.6 −1,252 ft 49.1 −604 ft
March 45.8 −828 ft 55.6 −170 ft
April 55.7 −163 ft 65.6 486 ft
May 64.6 421 ft 73.3 981 ft
June 72.8 949 ft 81.0 1,467 ft
July 77.4 1,241 ft 84.8 1,704 ft
August 75.7 1,133 ft 83.2 1,604 ft
September 70.4 796 ft 78.3 1,297 ft
October 59.7 101 ft 68.7 687 ft
November 49.4 −584 ft 58.9 49 ft
December 41.9 −1,094 ft 51.2 −463 ft

▲ above 5,000 ft · ⚠ above 8,000 ft. These are planning references at standard pressure and dry air — afternoon humidity and low pressure both push the real number higher. Run today's values below.

Run today’s numbers for W75

Altimeter-style gauge: field elevation and density altitude needles 03691215 DENSITY ALT ×1,000 FT 1,716 DENSITY ALTITUDE · FEET
field elevation density altitude

DENSITY ALTITUDE 1,716 ft

Field elevation 30 ft — the air behaves like 1,716 ft.

PRESSURE ALT
31 ft
ISA DEVIATION
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RULE-OF-THUMB DA
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AIR DENSITY INDEX
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AIR DENSITY
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WATER · GRAINS/LB
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For training and reference · verify with official sources and your POH before flight · no tool on this site renders a go / no-go judgment

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Frequently asked questions

How high does density altitude get at W75 in summer?

On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Hummel Field reaches roughly 1,704 ft at standard pressure. Hotter-than-normal days, low pressure, and humidity all push it higher, so run the day's actual numbers before flying.

What is the density altitude at W75 on an average day?

It swings with the seasons: from roughly −1,356 ft at the coldest month's average temperature to about 1,241 ft at the warmest month's — all from a constant field elevation of 30 ft. The month-by-month table above carries the full year.

What is the field elevation of Hummel Field?

30 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is W75 (FAA), in Saluda, Virginia.