Nampa, Idaho · field elev 2,537 ft
Density Altitude at Nampa Municipal (KMAN)
From a field elevation of 2,537 ft, a typical July afternoon at Nampa Municipal (93 °F) raises density altitude to about 5,269 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 | 31.2 | 1,292 ft | 39.5 | 1,858 ft |
| February | 36.6 | 1,662 ft | 47.2 | 2,374 ft |
| March | 44.5 | 2,194 ft | 57.4 | 3,042 ft |
| April | 50.3 | 2,578 ft | 64.5 | 3,497 ft |
| May | 58.9 | 3,139 ft | 73.9 | 4,088 ft |
| June | 66.9 | 3,649 ft | 82.8 | 4,637 ft |
| July | 75.3 | 4,175 ft | 93.3 | 5,269 ft ▲ |
| August | 73.6 | 4,070 ft | 91.6 | 5,168 ft ▲ |
| September | 63.8 | 3,453 ft | 81.0 | 4,527 ft |
| October | 51.5 | 2,657 ft | 66.6 | 3,630 ft |
| November | 39.5 | 1,858 ft | 50.7 | 2,605 ft |
| December | 31.4 | 1,306 ft | 40.0 | 1,892 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 KMAN
DENSITY ALTITUDE caution
Field elevation 2,537 ft — the air behaves like 5,251 ft.
- PRESSURE ALT
- 2,539 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 Idaho fields
- KEUL — Caldwell Exec
Caldwell · elev 2,431 ft
- KBOI — Boise Air Trml/Gowen Field
Boise · elev 2,872 ft
- S78 — Emmett Municipal
Emmett · elev 2,354 ft
- S66 — Homedale Municipal
Homedale · elev 2,220 ft
- 50S — Parma
Parma · elev 2,228 ft
- 1U3 — Murphy
Murphy · elev 2,855 ft
- U98 — Idaho City Usfs
Idaho City · elev 3,920 ft
- S75 — Payette Municipal
Payette · elev 2,230 ft
Frequently asked questions
How high does density altitude get at KMAN in summer?
On a typical July afternoon — around 93 °F at the nearest NOAA normals station — density altitude at Nampa Municipal reaches roughly 5,269 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 KMAN on an average day?
It swings with the seasons: from roughly 1,292 ft at the coldest month's average temperature to about 4,175 ft at the warmest month's — all from a constant field elevation of 2,537 ft. The month-by-month table above carries the full year.
What is the field elevation of Nampa Municipal?
2,537 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMAN (ICAO) / MAN (FAA), in Nampa, Idaho.