Noorvik, Alaska · field elev 55 ft
Density Altitude at Robert/Bob/Curtis Meml (PFNO)
Robert/Bob/Curtis Meml sits at 55 ft, and even a typical July afternoon (60 °F) only lifts density altitude to about 158 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 | −1.9 | −4,241 ft | 4.5 | −3,754 ft |
| February | 1.4 | −3,989 ft | 8.6 | −3,446 ft |
| March | 1.5 | −3,981 ft | 9.1 | −3,409 ft |
| April | 16.3 | −2,877 ft | 23.8 | −2,333 ft |
| May | 33.1 | −1,673 ft | 39.0 | −1,263 ft |
| June | 47.5 | −681 ft | 53.2 | −298 ft |
| July | 55.3 | −159 ft | 60.1 | 158 ft |
| August | 52.1 | −372 ft | 56.6 | −72 ft |
| September | 43.1 | −981 ft | 47.5 | −681 ft |
| October | 26.9 | −2,111 ft | 30.8 | −1,835 ft |
| November | 10.8 | −3,282 ft | 15.9 | −2,906 ft |
| December | 2.4 | −3,913 ft | 8.6 | −3,446 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 PFNO
DENSITY ALTITUDE
Field elevation 55 ft — the air behaves like 152 ft.
- PRESSURE ALT
- 56 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
- PAIK — Bob Baker Meml
Kiana · elev 179 ft
- PASK — Selawik
Selawik · elev 17 ft
- PAOT — Ralph Wien Meml
Kotzebue · elev 15 ft
- PABL — Buckland
Buckland · elev 29 ft
- PADE — Deering
Deering · elev 30 ft
- PAWN — Noatak
Noatak · elev 92 ft
- PAFM — Ambler
Ambler · elev 293 ft
- PAGH — Shungnak
Shungnak · elev 205 ft
Frequently asked questions
How high does density altitude get at PFNO in summer?
On a typical July afternoon — around 60 °F at the nearest NOAA normals station — density altitude at Robert/Bob/Curtis Meml reaches roughly 158 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 PFNO on an average day?
It swings with the seasons: from roughly −4,241 ft at the coldest month's average temperature to about −159 ft at the warmest month's — all from a constant field elevation of 55 ft. The month-by-month table above carries the full year.
What is the field elevation of Robert/Bob/Curtis Meml?
55 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is PFNO (ICAO) / D76 (FAA), in Noorvik, Alaska.