Kalispell, Montana · field elev 2,932 ft
Density Altitude at Kalispell City (S27)
From a field elevation of 2,932 ft, a typical August afternoon at Kalispell City (81 °F) raises density altitude to about 5,026 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 | 25.3 | 1,375 ft | 32.4 | 1,866 ft |
| February | 27.9 | 1,556 ft | 36.5 | 2,146 ft |
| March | 35.4 | 2,071 ft | 45.2 | 2,730 ft |
| April | 43.7 | 2,630 ft | 54.9 | 3,366 ft |
| May | 52.6 | 3,216 ft | 64.8 | 4,001 ft |
| June | 58.6 | 3,605 ft | 70.6 | 4,365 ft |
| July | 65.9 | 4,070 ft | 81.0 | 5,008 ft ▲ |
| August | 64.9 | 4,007 ft | 81.3 | 5,026 ft ▲ |
| September | 55.4 | 3,398 ft | 70.3 | 4,347 ft |
| October | 43.5 | 2,616 ft | 55.6 | 3,411 ft |
| November | 33.5 | 1,941 ft | 41.4 | 2,476 ft |
| December | 26.3 | 1,445 ft | 32.6 | 1,880 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 S27
DENSITY ALTITUDE caution
Field elevation 2,932 ft — the air behaves like 5,008 ft.
- PRESSURE ALT
- 2,934 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 Montana fields
- KGPI — Glacier Park International
Kalispell · elev 2,977 ft
- 58S — Whitefish
Whitefish · elev 3,066 ft
- 53U — Ferndale Airfield
Bigfork · elev 3,072 ft
- 8S1 — Polson
Polson · elev 2,941 ft
- 8U4 — Spotted Bear /Usfs/
Spotted Bear · elev 3,672 ft
- S09 — Hot Springs
Hot Springs · elev 2,763 ft
- 7S0 — Ronan
Ronan · elev 3,086 ft
- 0S1 — Meadow Creek Usfs
Meadow Creek · elev 3,993 ft
Frequently asked questions
How high does density altitude get at S27 in summer?
On a typical August afternoon — around 81 °F at the nearest NOAA normals station — density altitude at Kalispell City reaches roughly 5,026 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 S27 on an average day?
It swings with the seasons: from roughly 1,375 ft at the coldest month's average temperature to about 4,070 ft at the warmest month's — all from a constant field elevation of 2,932 ft. The month-by-month table above carries the full year.
What is the field elevation of Kalispell City?
2,932 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is S27 (FAA), in Kalispell, Montana.