Rampart, Alaska · field elev 307 ft
Density Altitude at Rampart (PFMP)
Rampart sits at 307 ft, and even a typical June afternoon (73 °F) only lifts density altitude to about 1,276 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 | −9.9 | −4,541 ft | 1.7 | −3,646 ft |
| February | −1.6 | −3,898 ft | 12.4 | −2,846 ft |
| March | 6.6 | −3,277 ft | 24.2 | −1,988 ft |
| April | 27.7 | −1,739 ft | 42.5 | −708 ft |
| May | 45.4 | −511 ft | 60.6 | 502 ft |
| June | 56.5 | 233 ft | 72.6 | 1,276 ft |
| July | 59.2 | 410 ft | 72.3 | 1,257 ft |
| August | 53.3 | 20 ft | 65.8 | 840 ft |
| September | 41.1 | −804 ft | 53.5 | 34 ft |
| October | 23.4 | −2,046 ft | 32.9 | −1,372 ft |
| November | 0.6 | −3,730 ft | 10.9 | −2,957 ft |
| December | −6.0 | −4,237 ft | 3.3 | −3,525 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 PFMP
DENSITY ALTITUDE
Field elevation 307 ft — the air behaves like 1,302 ft.
- PRESSURE ALT
- 308 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
- 20K — Quail Creek
Quail Creek · elev 1,576 ft
- 2Z2 — Eureka Creek
Eureka Creek · elev 700 ft
- PAAF — Minto Al Wright
Minto · elev 500 ft
- PAML — Manley Hot Springs
Manley Hot Springs · elev 275 ft
- 80A — American Creek
American Creek · elev 513 ft
- 4AK — Livengood Camp
Livengood · elev 428 ft
- PFSV — Stevens Village
Stevens Village · elev 328 ft
- PATA — Ralph M Calhoun Meml
Tanana · elev 242 ft
Frequently asked questions
How high does density altitude get at PFMP in summer?
On a typical June afternoon — around 73 °F at the nearest NOAA normals station — density altitude at Rampart reaches roughly 1,276 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 PFMP on an average day?
It swings with the seasons: from roughly −4,541 ft at the coldest month's average temperature to about 410 ft at the warmest month's — all from a constant field elevation of 307 ft. The month-by-month table above carries the full year.
What is the field elevation of Rampart?
307 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is PFMP (ICAO) / RMP (FAA), in Rampart, Alaska.