Ajo, Arizona · field elev 1,450 ft
Density Altitude at Eric Marcus Municipal (P01)
Eric Marcus Municipal sits at 1,450 ft, and even a typical July afternoon (104 °F) only lifts density altitude to about 4,575 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 | 56.2 | 1,624 ft | 67.5 | 2,354 ft |
| February | 59.2 | 1,820 ft | 70.5 | 2,545 ft |
| March | 64.5 | 2,162 ft | 77.1 | 2,959 ft |
| April | 70.7 | 2,557 ft | 84.0 | 3,386 ft |
| May | 78.8 | 3,065 ft | 92.0 | 3,873 ft |
| June | 87.5 | 3,600 ft | 101.1 | 4,416 ft |
| July | 91.7 | 3,855 ft | 103.8 | 4,575 ft |
| August | 91.1 | 3,818 ft | 103.0 | 4,528 ft |
| September | 86.8 | 3,558 ft | 99.1 | 4,297 ft |
| October | 76.7 | 2,934 ft | 89.2 | 3,703 ft |
| November | 64.2 | 2,143 ft | 77.4 | 2,978 ft |
| December | 55.0 | 1,545 ft | 66.6 | 2,297 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 P01
DENSITY ALTITUDE
Field elevation 1,450 ft — the air behaves like 4,587 ft.
- PRESSURE ALT
- 1,451 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
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Frequently asked questions
How high does density altitude get at P01 in summer?
On a typical July afternoon — around 104 °F at the nearest NOAA normals station — density altitude at Eric Marcus Municipal reaches roughly 4,575 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 P01 on an average day?
It swings with the seasons: from roughly 1,545 ft at the coldest month's average temperature to about 3,855 ft at the warmest month's — all from a constant field elevation of 1,450 ft. The month-by-month table above carries the full year.
What is the field elevation of Eric Marcus Municipal?
1,450 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is P01 (FAA), in Ajo, Arizona.