Prentiss, Mississippi · field elev 455 ft

Density Altitude at Prentiss-Jefferson Davis County (M43)

Prentiss-Jefferson Davis County sits at 455 ft, and even a typical July afternoon (96 °F) only lifts density altitude to about 2,894 ft — heat still trims performance, but the field rarely turns high-and-hot.

worst typical month: July · ≈2,894 ft station: MONTICELLO · 12 mi away normals vintage 1991–2020

Typical density altitude by month

From NOAA 1991–2020 monthly normals at MONTICELLO (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 48.9 −91 ft 61.7 756 ft
February 53.2 197 ft 66.7 1,080 ft
March 60.1 652 ft 73.8 1,534 ft
April 66.9 1,093 ft 80.9 1,980 ft
May 74.5 1,578 ft 87.8 2,407 ft
June 81.0 1,986 ft 93.5 2,755 ft
July 83.5 2,142 ft 95.8 2,894 ft
August 83.3 2,129 ft 95.8 2,894 ft
September 78.5 1,830 ft 91.0 2,603 ft
October 67.7 1,145 ft 81.9 2,043 ft
November 57.5 481 ft 71.5 1,388 ft
December 51.3 70 ft 64.2 919 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 M43

Altimeter-style gauge: field elevation and density altitude needles 03691215 DENSITY ALT ×1,000 FT 2,906 DENSITY ALTITUDE · FEET
field elevation density altitude

DENSITY ALTITUDE 2,906 ft

Field elevation 455 ft — the air behaves like 2,906 ft.

PRESSURE ALT
456 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 M43 in summer?

On a typical July afternoon — around 96 °F at the nearest NOAA normals station — density altitude at Prentiss-Jefferson Davis County reaches roughly 2,894 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 M43 on an average day?

It swings with the seasons: from roughly −91 ft at the coldest month's average temperature to about 2,142 ft at the warmest month's — all from a constant field elevation of 455 ft. The month-by-month table above carries the full year.

What is the field elevation of Prentiss-Jefferson Davis County?

455 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is M43 (FAA), in Prentiss, Mississippi.