Watervliet, Michigan · field elev 656 ft
Density Altitude at Watervliet Municipal (40C)
Watervliet Municipal sits at 656 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,276 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 | 26.9 | −1,358 ft | 33.4 | −902 ft |
| February | 29.0 | −1,210 ft | 36.2 | −707 ft |
| March | 37.1 | −645 ft | 45.9 | −44 ft |
| April | 47.3 | 51 ft | 57.9 | 756 ft |
| May | 57.8 | 749 ft | 68.7 | 1,456 ft |
| June | 67.5 | 1,379 ft | 78.4 | 2,070 ft |
| July | 71.5 | 1,635 ft | 81.7 | 2,276 ft |
| August | 70.1 | 1,545 ft | 80.3 | 2,188 ft |
| September | 63.3 | 1,108 ft | 74.1 | 1,799 ft |
| October | 52.6 | 406 ft | 62.3 | 1,043 ft |
| November | 41.8 | −322 ft | 49.1 | 172 ft |
| December | 32.2 | −985 ft | 38.3 | −562 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 40C
DENSITY ALTITUDE
Field elevation 656 ft — the air behaves like 2,294 ft.
- PRESSURE ALT
- 657 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 Michigan fields
- KBEH — Southwest Michigan Regional
Benton Harbor · elev 649 ft
- KLWA — South Haven Area Regional
South Haven · elev 666 ft
- C91 — Dowagiac Municipal
Dowagiac · elev 747 ft
- C20 — Andrews University Airpark
Berrien Springs · elev 674 ft
- M86 — Walle Field
Pullman · elev 635 ft
- 2C5 — Almena
Paw Paw · elev 748 ft
- 3TR — Jerry Tyler Meml
Niles · elev 750 ft
- 4N0 — Newmans
Kalamazoo · elev 840 ft
Frequently asked questions
How high does density altitude get at 40C in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Watervliet Municipal reaches roughly 2,276 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 40C on an average day?
It swings with the seasons: from roughly −1,358 ft at the coldest month's average temperature to about 1,635 ft at the warmest month's — all from a constant field elevation of 656 ft. The month-by-month table above carries the full year.
What is the field elevation of Watervliet Municipal?
656 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 40C (FAA), in Watervliet, Michigan.