Anchorage, Alaska · field elev 900 ft
Density Altitude at Bold (A13)
Bold sits at 900 ft, and even a typical July afternoon (71 °F) only lifts density altitude to about 1,870 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 | 14.3 | −1,958 ft | 21.0 | −1,473 ft |
| February | 20.5 | −1,509 ft | 29.1 | −898 ft |
| March | 25.3 | −1,166 ft | 35.9 | −424 ft |
| April | 38.8 | −224 ft | 50.1 | 541 ft |
| May | 49.0 | 467 ft | 61.9 | 1,318 ft |
| June | 56.6 | 972 ft | 68.8 | 1,762 ft |
| July | 60.0 | 1,194 ft | 70.5 | 1,870 ft |
| August | 57.5 | 1,031 ft | 67.9 | 1,704 ft |
| September | 48.5 | 434 ft | 58.0 | 1,063 ft |
| October | 35.3 | −465 ft | 44.1 | 138 ft |
| November | 21.2 | −1,459 ft | 27.7 | −996 ft |
| December | 17.2 | −1,747 ft | 23.9 | −1,266 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 A13
DENSITY ALTITUDE
Field elevation 900 ft — the air behaves like 1,902 ft.
- PRESSURE ALT
- 901 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
- AK1 — Butte Municipal
Palmer · elev 64 ft
- PABV — Birchwood
Birchwood · elev 83 ft
- PAAQ — Warren "Bud" Woods Palmer Municipal
Palmer · elev 249 ft
- PAWS — Wasilla
Wasilla · elev 354 ft
- AQY — Girdwood
Girdwood · elev 164 ft
- Z40 — Goose Bay
Goose Bay · elev 78 ft
- PAMR — Merrill Field
Anchorage · elev 143 ft
- PAGQ — Big Lake
Big Lake · elev 162 ft
Frequently asked questions
How high does density altitude get at A13 in summer?
On a typical July afternoon — around 71 °F at the nearest NOAA normals station — density altitude at Bold reaches roughly 1,870 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 A13 on an average day?
It swings with the seasons: from roughly −1,958 ft at the coldest month's average temperature to about 1,194 ft at the warmest month's — all from a constant field elevation of 900 ft. The month-by-month table above carries the full year.
What is the field elevation of Bold?
900 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is A13 (FAA), in Anchorage, Alaska.