Hartselle, Alabama · field elev 629 ft
Density Altitude at Hartselle/Morgan County Regional (5M0)
Hartselle/Morgan County Regional sits at 629 ft, and even a typical July afternoon (89 °F) only lifts density altitude to about 2,711 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 | 41.8 | −356 ft | 52.4 | 359 ft |
| February | 45.5 | −104 ft | 56.8 | 650 ft |
| March | 53.2 | 412 ft | 65.0 | 1,185 ft |
| April | 61.6 | 964 ft | 73.8 | 1,747 ft |
| May | 69.1 | 1,448 ft | 80.2 | 2,149 ft |
| June | 76.3 | 1,905 ft | 86.6 | 2,545 ft |
| July | 79.3 | 2,093 ft | 89.3 | 2,711 ft |
| August | 78.6 | 2,049 ft | 88.9 | 2,686 ft |
| September | 73.3 | 1,716 ft | 84.4 | 2,410 ft |
| October | 62.2 | 1,003 ft | 74.0 | 1,760 ft |
| November | 51.3 | 286 ft | 62.9 | 1,049 ft |
| December | 44.4 | −179 ft | 54.9 | 525 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 5M0
DENSITY ALTITUDE
Field elevation 629 ft — the air behaves like 2,692 ft.
- PRESSURE ALT
- 630 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
Nearby Alabama fields
- KCMD — Cullman Regional/Folsom Field
Cullman · elev 970 ft
- KDCU — Pryor Field Regional
Decatur · elev 592 ft
- KHSV — Huntsville International-Carl T Jones Field
Huntsville · elev 629 ft
- 2A8 — Addison
Addison · elev 786 ft
- 9A4 — Courtland
Courtland · elev 588 ft
- 3M5 — Moontown
Huntsville · elev 655 ft
- KMDQ — Huntsville Exec Tom Sharp Jr Field
Huntsville · elev 763 ft
- 8A1 — Guntersville Municipal/Joe Starnes Field
Guntersville · elev 615 ft
Frequently asked questions
How high does density altitude get at 5M0 in summer?
On a typical July afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Hartselle/Morgan County Regional reaches roughly 2,711 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 5M0 on an average day?
It swings with the seasons: from roughly −356 ft at the coldest month's average temperature to about 2,093 ft at the warmest month's — all from a constant field elevation of 629 ft. The month-by-month table above carries the full year.
What is the field elevation of Hartselle/Morgan County Regional?
629 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 5M0 (FAA), in Hartselle, Alabama.