Girdwood, Alaska · field elev 164 ft
Density Altitude at Girdwood (AQY)
Girdwood sits at 164 ft, and even a typical July afternoon (67 °F) only lifts density altitude to about 710 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 | 22.0 | −2,326 ft | 27.1 | −1,961 ft |
| February | 25.4 | −2,082 ft | 31.4 | −1,656 ft |
| March | 27.6 | −1,925 ft | 35.7 | −1,356 ft |
| April | 37.1 | −1,258 ft | 45.5 | −682 ft |
| May | 46.2 | −634 ft | 55.4 | −17 ft |
| June | 54.2 | −97 ft | 63.8 | 535 ft |
| July | 58.1 | 161 ft | 66.5 | 710 ft |
| August | 56.0 | 23 ft | 64.5 | 580 ft |
| September | 48.5 | −479 ft | 56.3 | 43 ft |
| October | 38.0 | −1,196 ft | 44.4 | −756 ft |
| November | 27.4 | −1,939 ft | 32.7 | −1,565 ft |
| December | 24.3 | −2,161 ft | 29.4 | −1,798 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 AQY
DENSITY ALTITUDE
Field elevation 164 ft — the air behaves like 742 ft.
- PRESSURE ALT
- 165 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
- 5HO — Hope
Hope · elev 194 ft
- PAWR — Whittier
Whittier · elev 39 ft
- A13 — Bold
Anchorage · elev 900 ft
- PAMR — Merrill Field
Anchorage · elev 143 ft
- PALH — Lake Hood
Anchorage · elev 79 ft
- PANC — Ted Stevens Anchorage International
Anchorage · elev 151 ft
- PABV — Birchwood
Birchwood · elev 83 ft
- Z40 — Goose Bay
Goose Bay · elev 78 ft
Frequently asked questions
How high does density altitude get at AQY in summer?
On a typical July afternoon — around 67 °F at the nearest NOAA normals station — density altitude at Girdwood reaches roughly 710 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 AQY on an average day?
It swings with the seasons: from roughly −2,326 ft at the coldest month's average temperature to about 161 ft at the warmest month's — all from a constant field elevation of 164 ft. The month-by-month table above carries the full year.
What is the field elevation of Girdwood?
164 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is AQY (FAA), in Girdwood, Alaska.