Conchas Dam, New Mexico · field elev 4,232 ft
Density Altitude at Conchas Lake (E89)
From a field elevation of 4,232 ft, a typical July afternoon at Conchas Lake (94 °F) raises density altitude to about 7,373 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 | 39.1 | 3,932 ft | 52.7 | 4,824 ft |
| February | 43.2 | 4,204 ft | 57.2 | 5,112 ft ▲ |
| March | 50.6 | 4,688 ft | 65.2 | 5,618 ft ▲ |
| April | 58.4 | 5,189 ft | 72.3 | 6,058 ft ▲ |
| May | 67.8 | 5,780 ft | 81.3 | 6,606 ft ▲ |
| June | 77.8 | 6,394 ft | 91.6 | 7,220 ft ▲ |
| July | 81.1 | 6,594 ft | 94.2 | 7,373 ft ▲ |
| August | 79.0 | 6,467 ft | 91.8 | 7,232 ft ▲ |
| September | 72.0 | 6,040 ft | 84.9 | 6,822 ft ▲ |
| October | 60.2 | 5,303 ft | 74.1 | 6,169 ft ▲ |
| November | 48.5 | 4,552 ft | 62.2 | 5,429 ft ▲ |
| December | 39.5 | 3,959 ft | 52.4 | 4,804 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 E89
DENSITY ALTITUDE caution
Field elevation 4,232 ft — the air behaves like 7,361 ft.
- PRESSURE ALT
- 4,234 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
- KTCC — Tucumcari Municipal
Tucumcari · elev 4,065 ft
- KSXU — Santa Rosa Route 66
Santa Rosa · elev 4,791 ft
- KLVS — Las Vegas Municipal
Las Vegas · elev 6,877 ft
- KFSU — Fort Sumner Municipal
Fort Sumner · elev 4,165 ft
- S42 — Springer Municipal
Springer · elev 5,894 ft
- N17 — Vaughn Municipal
Vaughn · elev 5,936 ft
- KCVN — Clovis Regional
Clovis · elev 4,216 ft
- KCAO — Clayton Municipal Airpark
Clayton · elev 4,970 ft
Frequently asked questions
How high does density altitude get at E89 in summer?
On a typical July afternoon — around 94 °F at the nearest NOAA normals station — density altitude at Conchas Lake reaches roughly 7,373 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 E89 on an average day?
It swings with the seasons: from roughly 3,932 ft at the coldest month's average temperature to about 6,594 ft at the warmest month's — all from a constant field elevation of 4,232 ft. The month-by-month table above carries the full year.
What is the field elevation of Conchas Lake?
4,232 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is E89 (FAA), in Conchas Dam, New Mexico.