Palmer, Alaska · field elev 64 ft
Density Altitude at Butte Municipal (AK1)
Butte Municipal sits at 64 ft, and even a typical July afternoon (70 °F) only lifts density altitude to about 793 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 | 13.6 | −3,064 ft | 21.0 | −2,524 ft |
| February | 19.7 | −2,618 ft | 27.9 | −2,029 ft |
| March | 25.5 | −2,200 ft | 34.4 | −1,571 ft |
| April | 39.1 | −1,245 ft | 48.8 | −582 ft |
| May | 49.6 | −528 ft | 60.9 | 222 ft |
| June | 57.2 | −22 ft | 67.9 | 677 ft |
| July | 60.0 | 163 ft | 69.7 | 793 ft |
| August | 57.1 | −28 ft | 66.5 | 587 ft |
| September | 48.7 | −589 ft | 56.9 | −41 ft |
| October | 35.4 | −1,501 ft | 42.2 | −1,031 ft |
| November | 21.0 | −2,524 ft | 27.8 | −2,036 ft |
| December | 16.4 | −2,858 ft | 23.4 | −2,351 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 AK1
DENSITY ALTITUDE
Field elevation 64 ft — the air behaves like 812 ft.
- PRESSURE ALT
- 65 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 Alaska fields
- PAAQ — Warren "Bud" Woods Palmer Municipal
Palmer · elev 249 ft
- A13 — Bold
Anchorage · elev 900 ft
- PAWS — Wasilla
Wasilla · elev 354 ft
- PABV — Birchwood
Birchwood · elev 83 ft
- PAGQ — Big Lake
Big Lake · elev 162 ft
- Z40 — Goose Bay
Goose Bay · elev 78 ft
- PAMR — Merrill Field
Anchorage · elev 143 ft
- PAUO — Willow
Willow · elev 215 ft
Frequently asked questions
How high does density altitude get at AK1 in summer?
On a typical July afternoon — around 70 °F at the nearest NOAA normals station — density altitude at Butte Municipal reaches roughly 793 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 AK1 on an average day?
It swings with the seasons: from roughly −3,064 ft at the coldest month's average temperature to about 163 ft at the warmest month's — all from a constant field elevation of 64 ft. The month-by-month table above carries the full year.
What is the field elevation of Butte Municipal?
64 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is AK1 (FAA), in Palmer, Alaska.