Greenville, Maine · field elev 1,402 ft

Density Altitude at Greenville Municipal (3B1)

Greenville Municipal sits at 1,402 ft, and even a typical July afternoon (75 °F) only lifts density altitude to about 2,795 ft — heat still trims performance, but the field rarely turns high-and-hot.

worst typical month: July · ≈2,795 ft station: GREENVILLE MAINE FORESTRY SVC · 2 mi away normals vintage 1991–2020

Typical density altitude by month

From NOAA 1991–2020 monthly normals at GREENVILLE MAINE FORESTRY SVC (2 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 14.2 −1,334 ft 22.9 −708 ft
February 16.3 −1,181 ft 25.3 −538 ft
March 25.6 −516 ft 34.4 98 ft
April 38.0 346 ft 46.4 915 ft
May 51.4 1,249 ft 61.5 1,910 ft
June 60.7 1,858 ft 70.2 2,467 ft
July 66.3 2,219 ft 75.4 2,795 ft
August 64.8 2,123 ft 74.1 2,713 ft
September 57.2 1,630 ft 66.1 2,206 ft
October 44.9 815 ft 52.5 1,321 ft
November 32.9 −5 ft 39.3 435 ft
December 21.5 −808 ft 28.3 −326 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 3B1

Altimeter-style gauge: field elevation and density altitude needles 03691215 DENSITY ALT ×1,000 FT 2,769 DENSITY ALTITUDE · FEET
field elevation density altitude

DENSITY ALTITUDE 2,769 ft

Field elevation 1,402 ft — the air behaves like 2,769 ft.

PRESSURE ALT
1,403 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 3B1 in summer?

On a typical July afternoon — around 75 °F at the nearest NOAA normals station — density altitude at Greenville Municipal reaches roughly 2,795 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 3B1 on an average day?

It swings with the seasons: from roughly −1,334 ft at the coldest month's average temperature to about 2,219 ft at the warmest month's — all from a constant field elevation of 1,402 ft. The month-by-month table above carries the full year.

What is the field elevation of Greenville Municipal?

1,402 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 3B1 (FAA), in Greenville, Maine.