La Pointe, Wisconsin · field elev 649 ft
Density Altitude at Major Gilbert Field (4R5)
Major Gilbert Field sits at 649 ft, and even a typical July afternoon (77 °F) only lifts density altitude to about 1,967 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 | 14.4 | −2,267 ft | 22.1 | −1,709 ft |
| February | 16.5 | −2,114 ft | 26.4 | −1,403 ft |
| March | 26.5 | −1,396 ft | 36.9 | −667 ft |
| April | 38.0 | −591 ft | 48.3 | 109 ft |
| May | 49.7 | 203 ft | 61.1 | 956 ft |
| June | 59.7 | 865 ft | 70.8 | 1,581 ft |
| July | 66.4 | 1,300 ft | 76.9 | 1,967 ft |
| August | 65.9 | 1,268 ft | 76.1 | 1,917 ft |
| September | 58.1 | 760 ft | 68.0 | 1,402 ft |
| October | 45.4 | −86 ft | 53.9 | 483 ft |
| November | 32.9 | −945 ft | 39.6 | −481 ft |
| December | 21.5 | −1,753 ft | 27.6 | −1,318 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 4R5
DENSITY ALTITUDE
Field elevation 649 ft — the air behaves like 1,974 ft.
- PRESSURE ALT
- 650 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 Wisconsin fields
- 23W — Cornucopia Field
Cornucopia · elev 757 ft
- KASX — John F Kennedy Meml
Ashland · elev 827 ft
- Y77 — Bayfield County
Iron River · elev 1,134 ft
- 5G4 — Eau Claire Lakes
Drummond · elev 1,212 ft
- 3CU — Cable Union
Cable · elev 1,360 ft
- KPKF — Park Falls Municipal
Park Falls · elev 1,501 ft
- KOLG — Solon Springs Municipal
Solon Springs · elev 1,102 ft
- KHYR — Sawyer County
Hayward · elev 1,216 ft
Frequently asked questions
How high does density altitude get at 4R5 in summer?
On a typical July afternoon — around 77 °F at the nearest NOAA normals station — density altitude at Major Gilbert Field reaches roughly 1,967 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 4R5 on an average day?
It swings with the seasons: from roughly −2,267 ft at the coldest month's average temperature to about 1,300 ft at the warmest month's — all from a constant field elevation of 649 ft. The month-by-month table above carries the full year.
What is the field elevation of Major Gilbert Field?
649 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 4R5 (FAA), in La Pointe, Wisconsin.