Mapleton, Iowa · field elev 1,116 ft

Density Altitude at James G Whiting Meml Field (KMEY)

James G Whiting Meml Field sits at 1,116 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,979 ft — heat still trims performance, but the field rarely turns high-and-hot.

worst typical month: July · ≈2,979 ft station: MAPLETON NO.2 · 1 mi away normals vintage 1991–2020

Typical density altitude by month

From NOAA 1991–2020 monthly normals at MAPLETON NO.2 (1 mi from the field) · standard pressure, dry air
Month Avg temp °F DA at avg temp Afternoon high °F DA on a typical afternoon
January 18.3 −1,396 ft 27.7 −726 ft
February 22.9 −1,066 ft 33.0 −355 ft
March 35.2 −203 ft 46.5 567 ft
April 47.2 615 ft 59.8 1,447 ft
May 59.0 1,395 ft 70.5 2,135 ft
June 69.4 2,065 ft 80.6 2,769 ft
July 73.1 2,300 ft 84.0 2,979 ft
August 70.3 2,123 ft 81.6 2,831 ft
September 62.6 1,629 ft 75.3 2,438 ft
October 49.7 782 ft 62.3 1,610 ft
November 35.1 −210 ft 46.0 534 ft
December 23.4 −1,031 ft 32.5 −390 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 KMEY

Altimeter-style gauge: field elevation and density altitude needles 03691215 DENSITY ALT ×1,000 FT 2,979 DENSITY ALTITUDE · FEET
field elevation density altitude

DENSITY ALTITUDE 2,979 ft

Field elevation 1,116 ft — the air behaves like 2,979 ft.

PRESSURE ALT
1,117 ft
ISA DEVIATION
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RULE-OF-THUMB DA
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AIR DENSITY INDEX
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AIR DENSITY
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WATER · GRAINS/LB
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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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Frequently asked questions

How high does density altitude get at KMEY in summer?

On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at James G Whiting Meml Field reaches roughly 2,979 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 KMEY on an average day?

It swings with the seasons: from roughly −1,396 ft at the coldest month's average temperature to about 2,300 ft at the warmest month's — all from a constant field elevation of 1,116 ft. The month-by-month table above carries the full year.

What is the field elevation of James G Whiting Meml Field?

1,116 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KMEY (ICAO) / MEY (FAA), in Mapleton, Iowa.