Slidell, Louisiana · field elev 28 ft
Density Altitude at Slidell (KASD)
Slidell sits at 28 ft, and even a typical August afternoon (91 °F) only lifts density altitude to about 2,095 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 | 51.4 | −452 ft | 62.0 | 250 ft |
| February | 55.2 | −199 ft | 65.9 | 503 ft |
| March | 60.9 | 178 ft | 71.8 | 883 ft |
| April | 67.0 | 575 ft | 77.9 | 1,270 ft |
| May | 74.3 | 1,042 ft | 84.9 | 1,707 ft |
| June | 80.3 | 1,421 ft | 89.7 | 2,003 ft |
| July | 82.1 | 1,533 ft | 91.1 | 2,089 ft |
| August | 82.1 | 1,533 ft | 91.2 | 2,095 ft |
| September | 78.2 | 1,289 ft | 88.0 | 1,899 ft |
| October | 68.9 | 697 ft | 80.5 | 1,433 ft |
| November | 58.8 | 40 ft | 71.0 | 832 ft |
| December | 53.5 | −312 ft | 64.3 | 400 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 KASD
DENSITY ALTITUDE
Field elevation 28 ft — the air behaves like 2,083 ft.
- PRESSURE ALT
- 29 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 Louisiana fields
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Covington · elev 38 ft
- KNEW — Lakefront
New Orleans · elev 7 ft
- KBXA — George R Carr Meml Air Field
Bogalusa · elev 119 ft
- KMSY — Louis Armstrong New Orleans International
New Orleans · elev 3 ft
- 2R7 — Franklinton
Franklinton · elev 175 ft
- KHDC — Hammond Northshore Regional
Hammond · elev 46 ft
- KAPS — Port Of South Louisiana Exec Regional
Reserve · elev 7 ft
- KGAO — South Lafourche Leonard Miller Jr
Galliano · elev 0 ft
Frequently asked questions
How high does density altitude get at KASD in summer?
On a typical August afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Slidell reaches roughly 2,095 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 KASD on an average day?
It swings with the seasons: from roughly −452 ft at the coldest month's average temperature to about 1,533 ft at the warmest month's — all from a constant field elevation of 28 ft. The month-by-month table above carries the full year.
What is the field elevation of Slidell?
28 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KASD (ICAO) / ASD (FAA), in Slidell, Louisiana.