Portales, New Mexico · field elev 4,078 ft
Density Altitude at Portales Municipal (KPRZ)
From a field elevation of 4,078 ft, a typical July afternoon at Portales Municipal (93 °F) raises density altitude to about 7,134 ft — solidly into the range where performance charts deserve a close read.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 40.2 | 3,815 ft | 55.0 | 4,782 ft |
| February | 44.6 | 4,106 ft | 60.6 | 5,139 ft ▲ |
| March | 51.9 | 4,583 ft | 68.7 | 5,648 ft ▲ |
| April | 59.7 | 5,082 ft | 76.9 | 6,152 ft ▲ |
| May | 68.7 | 5,648 ft | 84.8 | 6,630 ft ▲ |
| June | 77.6 | 6,195 ft | 92.9 | 7,110 ft ▲ |
| July | 79.8 | 6,329 ft | 93.3 | 7,134 ft ▲ |
| August | 78.1 | 6,225 ft | 91.3 | 7,016 ft ▲ |
| September | 71.3 | 5,809 ft | 85.2 | 6,654 ft ▲ |
| October | 60.4 | 5,127 ft | 75.8 | 6,085 ft ▲ |
| November | 48.3 | 4,349 ft | 63.4 | 5,316 ft ▲ |
| December | 40.3 | 3,822 ft | 54.6 | 4,757 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 KPRZ
DENSITY ALTITUDE caution
Field elevation 4,078 ft — the air behaves like 7,116 ft.
- PRESSURE ALT
- 4,080 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 New Mexico fields
- KCVN — Clovis Regional
Clovis · elev 4,216 ft
- KFSU — Fort Sumner Municipal
Fort Sumner · elev 4,165 ft
- 18T — Tatum
Tatum · elev 3,986 ft
- KTCC — Tucumcari Municipal
Tucumcari · elev 4,065 ft
- E06 — Lea County/Zip Franklin Meml
Lovington · elev 3,979 ft
- KROW — Roswell Air Center
Roswell · elev 3,671 ft
- KSXU — Santa Rosa Route 66
Santa Rosa · elev 4,791 ft
- E89 — Conchas Lake
Conchas Dam · elev 4,232 ft
Frequently asked questions
How high does density altitude get at KPRZ in summer?
On a typical July afternoon — around 93 °F at the nearest NOAA normals station — density altitude at Portales Municipal reaches roughly 7,134 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 KPRZ on an average day?
It swings with the seasons: from roughly 3,815 ft at the coldest month's average temperature to about 6,329 ft at the warmest month's — all from a constant field elevation of 4,078 ft. The month-by-month table above carries the full year.
What is the field elevation of Portales Municipal?
4,078 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KPRZ (ICAO) / PRZ (FAA), in Portales, New Mexico.