Northport, Michigan · field elev 628 ft
Density Altitude at Woolsey Meml (5D5)
Woolsey Meml sits at 628 ft, and even a typical July afternoon (75 °F) only lifts density altitude to about 1,847 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 | 23.4 | −1,643 ft | 28.6 | −1,273 ft |
| February | 23.5 | −1,636 ft | 29.9 | −1,182 ft |
| March | 30.5 | −1,140 ft | 38.4 | −590 ft |
| April | 41.1 | −405 ft | 49.6 | 171 ft |
| May | 52.2 | 344 ft | 61.7 | 970 ft |
| June | 61.7 | 970 ft | 70.9 | 1,562 ft |
| July | 67.1 | 1,319 ft | 75.4 | 1,847 ft |
| August | 67.0 | 1,312 ft | 75.0 | 1,822 ft |
| September | 60.5 | 891 ft | 68.7 | 1,422 ft |
| October | 49.3 | 151 ft | 56.1 | 603 ft |
| November | 38.7 | −569 ft | 44.1 | −200 ft |
| December | 28.8 | −1,259 ft | 34.0 | −895 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 5D5
DENSITY ALTITUDE
Field elevation 628 ft — the air behaves like 1,822 ft.
- PRESSURE ALT
- 629 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
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Mancelona · elev 1,133 ft
Frequently asked questions
How high does density altitude get at 5D5 in summer?
On a typical July afternoon — around 75 °F at the nearest NOAA normals station — density altitude at Woolsey Meml reaches roughly 1,847 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 5D5 on an average day?
It swings with the seasons: from roughly −1,643 ft at the coldest month's average temperature to about 1,319 ft at the warmest month's — all from a constant field elevation of 628 ft. The month-by-month table above carries the full year.
What is the field elevation of Woolsey Meml?
628 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 5D5 (FAA), in Northport, Michigan.