Cascade, Idaho · field elev 4,748 ft
Density Altitude at Cascade (U70)
From a field elevation of 4,748 ft, a typical July afternoon at Cascade (82 °F) raises density altitude to about 7,287 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 | 23.2 | 3,495 ft | 31.6 | 4,069 ft |
| February | 27.2 | 3,770 ft | 37.1 | 4,438 ft |
| March | 34.3 | 4,251 ft | 44.9 | 4,953 ft |
| April | 41.2 | 4,710 ft | 52.9 | 5,471 ft ▲ |
| May | 50.0 | 5,284 ft | 62.8 | 6,098 ft ▲ |
| June | 56.7 | 5,714 ft | 70.3 | 6,564 ft ▲ |
| July | 65.2 | 6,248 ft | 82.2 | 7,287 ft ▲ |
| August | 64.4 | 6,199 ft | 81.9 | 7,269 ft ▲ |
| September | 56.0 | 5,669 ft | 72.5 | 6,699 ft ▲ |
| October | 44.6 | 4,933 ft | 57.9 | 5,790 ft ▲ |
| November | 33.1 | 4,170 ft | 41.7 | 4,743 ft |
| December | 23.8 | 3,536 ft | 31.5 | 4,062 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 U70
DENSITY ALTITUDE caution
Field elevation 4,748 ft — the air behaves like 7,275 ft.
- PRESSURE ALT
- 4,750 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 Idaho fields
- U84 — Donald D Coski Meml
Donnelly · elev 4,860 ft
- 0U0 — Landmark Usfs
Landmark · elev 6,662 ft
- U82 — Council Municipal
Council · elev 2,966 ft
- KMYL — Mc Call Municipal
Mc Call · elev 5,024 ft
- U88 — Garden Valley
Garden Valley · elev 3,177 ft
- I92 — Reed Ranch
Yellow Pine · elev 4,157 ft
- U63 — Bruce Meadows
Stanley · elev 6,370 ft
- 1U4 — New Meadows
New Meadows · elev 3,908 ft
Frequently asked questions
How high does density altitude get at U70 in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Cascade reaches roughly 7,287 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 U70 on an average day?
It swings with the seasons: from roughly 3,495 ft at the coldest month's average temperature to about 6,248 ft at the warmest month's — all from a constant field elevation of 4,748 ft. The month-by-month table above carries the full year.
What is the field elevation of Cascade?
4,748 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is U70 (FAA), in Cascade, Idaho.