Weiser, Idaho · field elev 2,120 ft
Density Altitude at Weiser Municipal (S87)
Weiser Municipal sits at 2,120 ft, and even a typical July afternoon (95 °F) only lifts density altitude to about 4,835 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 | 29.4 | 647 ft | 36.2 | 1,116 ft |
| February | 35.3 | 1,054 ft | 44.4 | 1,671 ft |
| March | 44.8 | 1,698 ft | 56.7 | 2,483 ft |
| April | 51.4 | 2,136 ft | 64.3 | 2,973 ft |
| May | 60.6 | 2,735 ft | 74.4 | 3,610 ft |
| June | 68.5 | 3,239 ft | 83.5 | 4,172 ft |
| July | 77.8 | 3,821 ft | 94.5 | 4,835 ft |
| August | 75.4 | 3,672 ft | 91.8 | 4,674 ft |
| September | 64.9 | 3,011 ft | 80.8 | 4,006 ft |
| October | 51.3 | 2,129 ft | 65.1 | 3,024 ft |
| November | 38.2 | 1,252 ft | 48.0 | 1,911 ft |
| December | 29.7 | 668 ft | 36.8 | 1,157 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 S87
DENSITY ALTITUDE
Field elevation 2,120 ft — the air behaves like 4,865 ft.
- PRESSURE ALT
- 2,121 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
- S75 — Payette Municipal
Payette · elev 2,230 ft
- 0U9 — Lee Williams Meml
Midvale · elev 2,617 ft
- 50S — Parma
Parma · elev 2,228 ft
- S78 — Emmett Municipal
Emmett · elev 2,354 ft
- S66 — Homedale Municipal
Homedale · elev 2,220 ft
- KEUL — Caldwell Exec
Caldwell · elev 2,431 ft
- U82 — Council Municipal
Council · elev 2,966 ft
- KMAN — Nampa Municipal
Nampa · elev 2,537 ft
Frequently asked questions
How high does density altitude get at S87 in summer?
On a typical July afternoon — around 95 °F at the nearest NOAA normals station — density altitude at Weiser Municipal reaches roughly 4,835 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 S87 on an average day?
It swings with the seasons: from roughly 647 ft at the coldest month's average temperature to about 3,821 ft at the warmest month's — all from a constant field elevation of 2,120 ft. The month-by-month table above carries the full year.
What is the field elevation of Weiser Municipal?
2,120 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is S87 (FAA), in Weiser, Idaho.