Selma, Alabama · field elev 166 ft
Density Altitude at Craig Field (KSEM)
Craig Field sits at 166 ft, and even a typical July afternoon (91 °F) only lifts density altitude to about 2,263 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 | 45.9 | −652 ft | 57.0 | 91 ft |
| February | 50.4 | −348 ft | 62.3 | 439 ft |
| March | 56.7 | 72 ft | 69.3 | 892 ft |
| April | 63.1 | 491 ft | 76.1 | 1,325 ft |
| May | 71.7 | 1,046 ft | 84.3 | 1,839 ft |
| June | 78.2 | 1,458 ft | 89.0 | 2,128 ft |
| July | 80.9 | 1,627 ft | 91.2 | 2,263 ft |
| August | 80.3 | 1,589 ft | 90.7 | 2,233 ft |
| September | 75.0 | 1,256 ft | 86.8 | 1,993 ft |
| October | 64.8 | 602 ft | 77.7 | 1,426 ft |
| November | 54.3 | −88 ft | 67.3 | 764 ft |
| December | 48.7 | −463 ft | 59.9 | 282 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 KSEM
DENSITY ALTITUDE
Field elevation 166 ft — the air behaves like 2,251 ft.
- PRESSURE ALT
- 167 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
- A08 — Vaiden Field
Marion · elev 220 ft
- 1A9 — Prattville/Grouby Field
Prattville · elev 225 ft
- 61A — Camden Municipal
Camden · elev 143 ft
- KMGM — Montgomery Regional (Dannelly Field)
Montgomery · elev 221 ft
- 08A — Wetumpka Municipal
Wetumpka · elev 197 ft
- KPRN — Mac Crenshaw Meml
Greenville · elev 451 ft
- 02A — Chilton County
Clanton · elev 585 ft
- 0A8 — Bibb County
Centreville · elev 251 ft
Frequently asked questions
How high does density altitude get at KSEM in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Craig Field reaches roughly 2,263 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 KSEM on an average day?
It swings with the seasons: from roughly −652 ft at the coldest month's average temperature to about 1,627 ft at the warmest month's — all from a constant field elevation of 166 ft. The month-by-month table above carries the full year.
What is the field elevation of Craig Field?
166 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSEM (ICAO) / SEM (FAA), in Selma, Alabama.