Whitefish, Montana · field elev 3,066 ft
Density Altitude at Whitefish (58S)
From a field elevation of 3,066 ft, a typical July afternoon at Whitefish (81 °F) raises density altitude to about 5,146 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 | 22.4 | 1,340 ft | 29.0 | 1,799 ft |
| February | 25.1 | 1,529 ft | 33.9 | 2,135 ft |
| March | 32.8 | 2,060 ft | 42.8 | 2,736 ft |
| April | 41.6 | 2,656 ft | 53.2 | 3,421 ft |
| May | 51.2 | 3,290 ft | 63.5 | 4,082 ft |
| June | 57.4 | 3,693 ft | 69.8 | 4,479 ft |
| July | 65.4 | 4,203 ft | 80.6 | 5,146 ft ▲ |
| August | 64.1 | 4,120 ft | 80.0 | 5,110 ft ▲ |
| September | 54.4 | 3,499 ft | 68.7 | 4,410 ft |
| October | 41.7 | 2,662 ft | 52.6 | 3,382 ft |
| November | 30.8 | 1,923 ft | 37.5 | 2,380 ft |
| December | 23.4 | 1,410 ft | 28.9 | 1,792 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 58S
DENSITY ALTITUDE caution
Field elevation 3,066 ft — the air behaves like 5,171 ft.
- PRESSURE ALT
- 3,068 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
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- 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 Montana fields
- KGPI — Glacier Park International
Kalispell · elev 2,977 ft
- S27 — Kalispell City
Kalispell · elev 2,932 ft
- 53U — Ferndale Airfield
Bigfork · elev 3,072 ft
- 8U4 — Spotted Bear /Usfs/
Spotted Bear · elev 3,672 ft
- 8S1 — Polson
Polson · elev 2,941 ft
- 88M — Eureka
Eureka · elev 2,672 ft
- 8U2 — Schafer /Usfs/
Schafer · elev 4,856 ft
- S59 — Libby
Libby · elev 2,605 ft
Frequently asked questions
How high does density altitude get at 58S in summer?
On a typical July afternoon — around 81 °F at the nearest NOAA normals station — density altitude at Whitefish reaches roughly 5,146 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 58S on an average day?
It swings with the seasons: from roughly 1,340 ft at the coldest month's average temperature to about 4,203 ft at the warmest month's — all from a constant field elevation of 3,066 ft. The month-by-month table above carries the full year.
What is the field elevation of Whitefish?
3,066 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 58S (FAA), in Whitefish, Montana.