Greenville, Alabama · field elev 451 ft
Density Altitude at Mac Crenshaw Meml (KPRN)
Mac Crenshaw Meml sits at 451 ft, and even a typical August afternoon (92 °F) only lifts density altitude to about 2,683 ft — heat still trims performance, but the field rarely turns high-and-hot.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 48.2 | −143 ft | 59.4 | 601 ft |
| February | 52.6 | 152 ft | 64.2 | 914 ft |
| March | 58.9 | 568 ft | 71.1 | 1,358 ft |
| April | 65.3 | 985 ft | 78.0 | 1,794 ft |
| May | 73.3 | 1,497 ft | 85.6 | 2,267 ft |
| June | 79.4 | 1,882 ft | 90.0 | 2,537 ft |
| July | 81.6 | 2,019 ft | 91.8 | 2,646 ft |
| August | 81.8 | 2,031 ft | 92.4 | 2,683 ft |
| September | 77.2 | 1,744 ft | 87.9 | 2,408 ft |
| October | 67.1 | 1,101 ft | 79.2 | 1,869 ft |
| November | 57.0 | 443 ft | 69.3 | 1,243 ft |
| December | 50.6 | 18 ft | 61.7 | 752 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 KPRN
DENSITY ALTITUDE
Field elevation 451 ft — the air behaves like 2,659 ft.
- PRESSURE ALT
- 452 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
- —
- AIR DENSITY
- —
- WATER · GRAINS/LB
- —
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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- KGZH — Evergreen Regional/Middleton Field
Evergreen · elev 259 ft
- 79J — South Alabama Regional At Bill Benton Field
Andalusia · elev 310 ft
- KSEM — Craig Field
Selma · elev 166 ft
- 1A9 — Prattville/Grouby Field
Prattville · elev 225 ft
- 14J — Carl Folsom
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Frequently asked questions
How high does density altitude get at KPRN in summer?
On a typical August afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Mac Crenshaw Meml reaches roughly 2,683 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 KPRN on an average day?
It swings with the seasons: from roughly −143 ft at the coldest month's average temperature to about 2,031 ft at the warmest month's — all from a constant field elevation of 451 ft. The month-by-month table above carries the full year.
What is the field elevation of Mac Crenshaw Meml?
451 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KPRN (ICAO) / PRN (FAA), in Greenville, Alabama.