Rexburg, Idaho · field elev 4,862 ft
Density Altitude at Rexburg-Madison County (KRXE)
From a field elevation of 4,862 ft, a typical July afternoon at Rexburg-Madison County (85 °F) raises density altitude to about 7,580 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 | 20.3 | 3,436 ft | 27.8 | 3,952 ft |
| February | 24.1 | 3,699 ft | 32.2 | 4,251 ft |
| March | 35.1 | 4,445 ft | 45.1 | 5,107 ft ▲ |
| April | 43.9 | 5,028 ft | 55.5 | 5,777 ft ▲ |
| May | 52.9 | 5,611 ft | 65.9 | 6,431 ft ▲ |
| June | 60.3 | 6,081 ft | 74.2 | 6,942 ft ▲ |
| July | 68.2 | 6,574 ft | 84.8 | 7,580 ft ▲ |
| August | 66.9 | 6,493 ft | 84.2 | 7,544 ft ▲ |
| September | 57.4 | 5,898 ft | 73.1 | 6,875 ft ▲ |
| October | 44.8 | 5,087 ft | 57.3 | 5,891 ft ▲ |
| November | 32.1 | 4,244 ft | 41.3 | 4,857 ft |
| December | 21.8 | 3,540 ft | 29.3 | 4,054 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 KRXE
DENSITY ALTITUDE caution
Field elevation 4,862 ft — the air behaves like 7,592 ft.
- PRESSURE ALT
- 4,864 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
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- AIR DENSITY
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- 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 Idaho fields
- U12 — Stanford Field
St Anthony · elev 4,966 ft
- U56 — Rigby
Rigby · elev 4,845 ft
- KIDA — Idaho Falls Regional
Idaho Falls · elev 4,744 ft
- U41 — Dubois Municipal
Dubois · elev 5,123 ft
- 1U2 — Mud Lake/West Jefferson County
Mud Lake · elev 4,795 ft
- KDIJ — Driggs/Reed Meml
Driggs · elev 6,257 ft
- U02 — Mccarley Field
Blackfoot · elev 4,492 ft
- U37 — Midway
Atomic City · elev 5,017 ft
Frequently asked questions
How high does density altitude get at KRXE in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Rexburg-Madison County reaches roughly 7,580 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 KRXE on an average day?
It swings with the seasons: from roughly 3,436 ft at the coldest month's average temperature to about 6,574 ft at the warmest month's — all from a constant field elevation of 4,862 ft. The month-by-month table above carries the full year.
What is the field elevation of Rexburg-Madison County?
4,862 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KRXE (ICAO) / RXE (FAA), in Rexburg, Idaho.