Mc Grath, Alaska · field elev 343 ft
Density Altitude at Mc Grath (PAMC)
Mc Grath sits at 343 ft, and even a typical July afternoon (70 °F) only lifts density altitude to about 1,123 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 | −5.8 | −4,176 ft | 2.6 | −3,532 ft |
| February | 4.5 | −3,389 ft | 14.7 | −2,631 ft |
| March | 11.9 | −2,837 ft | 24.5 | −1,922 ft |
| April | 32.2 | −1,376 ft | 42.9 | −636 ft |
| May | 48.4 | −263 ft | 58.9 | 435 ft |
| June | 58.7 | 422 ft | 68.8 | 1,078 ft |
| July | 60.8 | 560 ft | 69.5 | 1,123 ft |
| August | 55.9 | 237 ft | 64.0 | 768 ft |
| September | 46.0 | −425 ft | 53.9 | 105 ft |
| October | 28.4 | −1,644 ft | 34.5 | −1,216 ft |
| November | 8.0 | −3,127 ft | 14.9 | −2,616 ft |
| December | −2.3 | −3,906 ft | 5.5 | −3,314 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 PAMC
DENSITY ALTITUDE
Field elevation 343 ft — the air behaves like 1,155 ft.
- PRESSURE ALT
- 344 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
- PPCT — Takotna
Takotna · elev 423 ft
- A77 — Yankee Creek 2
Yankee Creek · elev 1,120 ft
- Z17 — Ophir
Ophir · elev 595 ft
- PAFS — Nikolai
Nikolai · elev 447 ft
- Z48 — Bear Creek 3
Bear Creek · elev 740 ft
- PAFL — Tin Creek
Farewell Lake · elev 1,185 ft
- 2K5 — Telida
Telida · elev 650 ft
- FLT — Flat
Flat · elev 343 ft
Frequently asked questions
How high does density altitude get at PAMC in summer?
On a typical July afternoon — around 70 °F at the nearest NOAA normals station — density altitude at Mc Grath reaches roughly 1,123 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 PAMC on an average day?
It swings with the seasons: from roughly −4,176 ft at the coldest month's average temperature to about 560 ft at the warmest month's — all from a constant field elevation of 343 ft. The month-by-month table above carries the full year.
What is the field elevation of Mc Grath?
343 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is PAMC (ICAO) / MCG (FAA), in Mc Grath, Alaska.