Jacumba, California · field elev 2,844 ft
Density Altitude at Jacumba (L78)
From a field elevation of 2,844 ft, a typical August afternoon at Jacumba (93 °F) raises density altitude to about 5,617 ft — solidly into the range where performance charts deserve a close read.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 48.2 | 2,819 ft | 61.5 | 3,683 ft |
| February | 48.2 | 2,819 ft | 61.4 | 3,676 ft |
| March | 50.2 | 2,951 ft | 65.0 | 3,905 ft |
| April | 53.4 | 3,160 ft | 69.3 | 4,176 ft |
| May | 58.9 | 3,516 ft | 75.8 | 4,581 ft |
| June | 65.4 | 3,931 ft | 85.1 | 5,150 ft ▲ |
| July | 72.4 | 4,370 ft | 91.4 | 5,528 ft ▲ |
| August | 73.9 | 4,463 ft | 92.9 | 5,617 ft ▲ |
| September | 69.1 | 4,164 ft | 87.7 | 5,306 ft ▲ |
| October | 60.5 | 3,619 ft | 77.9 | 4,711 ft |
| November | 53.1 | 3,141 ft | 68.6 | 4,132 ft |
| December | 47.3 | 2,760 ft | 60.9 | 3,644 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 L78
DENSITY ALTITUDE caution
Field elevation 2,844 ft — the air behaves like 5,623 ft.
- PRESSURE ALT
- 2,846 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 California fields
- L90 — Ocotillo
Ocotillo Wells · elev 160 ft
- KIPL — Imperial County
Imperial · elev −54 ft
- KCXL — Calexico International
Calexico · elev 6 ft
- KSAS — Salton Sea
Salton City · elev −84 ft
- L08 — Borrego Valley
Borrego Springs · elev 522 ft
- KBWC — Brawley Municipal
Brawley · elev −128 ft
- KSDM — Brown Field Municipal
San Diego · elev 526 ft
- KSEE — Gillespie Field
San Diego/El Cajon · elev 388 ft
Frequently asked questions
How high does density altitude get at L78 in summer?
On a typical August afternoon — around 93 °F at the nearest NOAA normals station — density altitude at Jacumba reaches roughly 5,617 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 L78 on an average day?
It swings with the seasons: from roughly 2,760 ft at the coldest month's average temperature to about 4,463 ft at the warmest month's — all from a constant field elevation of 2,844 ft. The month-by-month table above carries the full year.
What is the field elevation of Jacumba?
2,844 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is L78 (FAA), in Jacumba, California.