Cadiz, Kentucky · field elev 571 ft
Density Altitude at Lake Barkley State Park (1M9)
Lake Barkley State Park sits at 571 ft, and even a typical August afternoon (90 °F) only lifts density altitude to about 2,658 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 | 36.0 | −827 ft | 44.7 | −230 ft |
| February | 40.3 | −530 ft | 49.7 | 107 ft |
| March | 49.5 | 93 ft | 59.6 | 762 ft |
| April | 59.3 | 743 ft | 70.8 | 1,486 ft |
| May | 67.8 | 1,294 ft | 78.6 | 1,978 ft |
| June | 76.3 | 1,834 ft | 86.2 | 2,450 ft |
| July | 79.7 | 2,047 ft | 89.5 | 2,652 ft |
| August | 79.1 | 2,010 ft | 89.6 | 2,658 ft |
| September | 72.3 | 1,581 ft | 82.9 | 2,246 ft |
| October | 60.5 | 821 ft | 71.4 | 1,524 ft |
| November | 49.0 | 60 ft | 59.1 | 730 ft |
| December | 39.7 | −572 ft | 47.9 | −14 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 1M9
DENSITY ALTITUDE
Field elevation 571 ft — the air behaves like 2,683 ft.
- PRESSURE ALT
- 572 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 Kentucky fields
- 2M0 — Princeton-Caldwell County
Princeton · elev 584 ft
- KHVC — Hopkinsville-Christian County
Hopkinsville · elev 564 ft
- M34 — Kentucky Dam State Park
Calvert City · elev 351 ft
- KCEY — Kyle-Oakley Field
Murray · elev 577 ft
- 8M7 — Tradewater
Dawson Springs · elev 405 ft
- KGDA — Marion-Crittenden County James C Johnson Regional
Marion · elev 653 ft
- M25 — Mayfield Graves County
Mayfield · elev 522 ft
- 2I0 — Madisonville Regional
Madisonville · elev 439 ft
Frequently asked questions
How high does density altitude get at 1M9 in summer?
On a typical August afternoon — around 90 °F at the nearest NOAA normals station — density altitude at Lake Barkley State Park reaches roughly 2,658 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 1M9 on an average day?
It swings with the seasons: from roughly −827 ft at the coldest month's average temperature to about 2,047 ft at the warmest month's — all from a constant field elevation of 571 ft. The month-by-month table above carries the full year.
What is the field elevation of Lake Barkley State Park?
571 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 1M9 (FAA), in Cadiz, Kentucky.