Bay St Louis, Mississippi · field elev 23 ft
Density Altitude at Stennis International (KHSA)
Stennis International sits at 23 ft, and even a typical August afternoon (89 °F) only lifts density altitude to about 1,954 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 | 50.5 | −519 ft | 59.4 | 73 ft |
| February | 53.8 | −298 ft | 63.1 | 315 ft |
| March | 59.8 | 99 ft | 68.6 | 672 ft |
| April | 66.2 | 517 ft | 74.8 | 1,068 ft |
| May | 73.9 | 1,011 ft | 81.7 | 1,502 ft |
| June | 79.5 | 1,364 ft | 86.8 | 1,819 ft |
| July | 81.4 | 1,483 ft | 88.5 | 1,923 ft |
| August | 81.5 | 1,490 ft | 89.0 | 1,954 ft |
| September | 77.9 | 1,264 ft | 85.7 | 1,751 ft |
| October | 68.7 | 678 ft | 78.0 | 1,270 ft |
| November | 58.5 | 14 ft | 68.2 | 646 ft |
| December | 52.2 | −405 ft | 61.3 | 198 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 KHSA
DENSITY ALTITUDE
Field elevation 23 ft — the air behaves like 1,954 ft.
- PRESSURE ALT
- 24 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 Mississippi fields
- 66Y — Diamondhead
Diamondhead · elev 14 ft
- KMJD — Picayune Municipal
Picayune · elev 55 ft
- KGPT — Gulfport-Biloxi International
Gulfport · elev 28 ft
- M13 — Poplarville/Pearl River County
Poplarville · elev 319 ft
- M24 — Dean Griffin Meml
Wiggins · elev 273 ft
- 5R2 — Ocean Springs
Ocean Springs · elev 20 ft
- 4R1 — I H Bass Jr Meml
Lumberton · elev 310 ft
- KPQL — Trent Lott International
Pascagoula · elev 17 ft
Frequently asked questions
How high does density altitude get at KHSA in summer?
On a typical August afternoon — around 89 °F at the nearest NOAA normals station — density altitude at Stennis International reaches roughly 1,954 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 KHSA on an average day?
It swings with the seasons: from roughly −519 ft at the coldest month's average temperature to about 1,490 ft at the warmest month's — all from a constant field elevation of 23 ft. The month-by-month table above carries the full year.
What is the field elevation of Stennis International?
23 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KHSA (ICAO) / HSA (FAA), in Bay St Louis, Mississippi.