Circle, Alaska · field elev 613 ft
Density Altitude at Circle City (PACR)
Circle City sits at 613 ft, and even a typical July afternoon (72 °F) only lifts density altitude to about 1,639 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 | −4,599 ft | −8.6 | −4,049 ft |
| February | −9.2 | −4,096 ft | 0.5 | −3,349 ft |
| March | 0.9 | −3,319 ft | 14.7 | −2,291 ft |
| April | 25.3 | −1,526 ft | 39.5 | −533 ft |
| May | 44.9 | −165 ft | 58.9 | 768 ft |
| June | 56.4 | 604 ft | 71.1 | 1,556 ft |
| July | 58.9 | 768 ft | 72.4 | 1,639 ft |
| August | 51.8 | 299 ft | 64.8 | 1,152 ft |
| September | 40.0 | −499 ft | 52.2 | 326 ft |
| October | 18.8 | −1,992 ft | 27.4 | −1,377 ft |
| November | −4.1 | −3,701 ft | 3.9 | −3,092 ft |
| December | −12.1 | −4,323 ft | −4.5 | −3,731 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 PACR
DENSITY ALTITUDE
Field elevation 613 ft — the air behaves like 1,614 ft.
- PRESSURE ALT
- 614 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
- CHP — Circle Hot Springs
Circle Hot Springs · elev 870 ft
- L20 — Coal Creek
Yukon Charley Rivers · elev 867 ft
- PACI — Chalkyitsik
Chalkyitsik · elev 549 ft
- PAAR — Birch Creek
Birch Creek · elev 440 ft
- PFYU — Fort Yukon
Fort Yukon · elev 447 ft
- PAWB — Beaver
Beaver · elev 365 ft
- PAVE — Venetie
Venetie · elev 574 ft
Frequently asked questions
How high does density altitude get at PACR in summer?
On a typical July afternoon — around 72 °F at the nearest NOAA normals station — density altitude at Circle City reaches roughly 1,639 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 PACR on an average day?
It swings with the seasons: from roughly −4,599 ft at the coldest month's average temperature to about 768 ft at the warmest month's — all from a constant field elevation of 613 ft. The month-by-month table above carries the full year.
What is the field elevation of Circle City?
613 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is PACR (ICAO) / CRC (FAA), in Circle, Alaska.