Circle Hot Springs, Alaska · field elev 870 ft
Density Altitude at Circle Hot Springs (CHP)
Circle Hot Springs sits at 870 ft, and even a typical July afternoon (72 °F) only lifts density altitude to about 1,954 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 | −15.6 | −4,270 ft | −8.6 | −3,721 ft |
| February | −9.2 | −3,768 ft | 0.5 | −3,023 ft |
| March | 0.9 | −2,993 ft | 14.7 | −1,967 ft |
| April | 25.3 | −1,204 ft | 39.5 | −213 ft |
| May | 44.9 | 154 ft | 58.9 | 1,085 ft |
| June | 56.4 | 921 ft | 71.1 | 1,872 ft |
| July | 58.9 | 1,085 ft | 72.4 | 1,954 ft |
| August | 51.8 | 617 ft | 64.8 | 1,468 ft |
| September | 40.0 | −179 ft | 52.2 | 644 ft |
| October | 18.8 | −1,669 ft | 27.4 | −1,055 ft |
| November | −4.1 | −3,374 ft | 3.9 | −2,767 ft |
| December | −12.1 | −3,994 ft | −4.5 | −3,405 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 CHP
DENSITY ALTITUDE
Field elevation 870 ft — the air behaves like 1,929 ft.
- PRESSURE ALT
- 871 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 Alaska fields
- PACE — Central
Central · elev 937 ft
- PACR — Circle City
Circle · elev 613 ft
- L20 — Coal Creek
Yukon Charley Rivers · elev 867 ft
- PAAR — Birch Creek
Birch Creek · elev 440 ft
- PFYU — Fort Yukon
Fort Yukon · elev 447 ft
- PACI — Chalkyitsik
Chalkyitsik · elev 549 ft
- 95Z — Bradley Sky-Ranch
North Pole · elev 483 ft
- PAWB — Beaver
Beaver · elev 365 ft
Frequently asked questions
How high does density altitude get at CHP in summer?
On a typical July afternoon — around 72 °F at the nearest NOAA normals station — density altitude at Circle Hot Springs reaches roughly 1,954 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 CHP on an average day?
It swings with the seasons: from roughly −4,270 ft at the coldest month's average temperature to about 1,085 ft at the warmest month's — all from a constant field elevation of 870 ft. The month-by-month table above carries the full year.
What is the field elevation of Circle Hot Springs?
870 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is CHP (FAA), in Circle Hot Springs, Alaska.