Falfurrias, Texas · field elev 112 ft

Density Altitude at Brooks County (KBKS)

Brooks County sits at 112 ft, and even a typical July afternoon (98 °F) only lifts density altitude to about 2,604 ft — heat still trims performance, but the field rarely turns high-and-hot.

worst typical month: July · ≈2,604 ft station: FALFURRIAS · 5 mi away normals vintage 1991–2020

Typical density altitude by month

From NOAA 1991–2020 monthly normals at FALFURRIAS (5 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 56.4 −15 ft 69.3 826 ft
February 60.2 235 ft 73.1 1,069 ft
March 66.4 639 ft 79.8 1,492 ft
April 72.8 1,050 ft 86.0 1,878 ft
May 79.3 1,461 ft 91.2 2,197 ft
June 84.1 1,760 ft 96.2 2,501 ft
July 85.4 1,841 ft 97.9 2,604 ft
August 85.2 1,828 ft 97.6 2,585 ft
September 80.9 1,561 ft 92.4 2,271 ft
October 73.2 1,075 ft 86.6 1,915 ft
November 64.5 516 ft 77.9 1,373 ft
December 58.3 110 ft 71.4 960 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 KBKS

Altimeter-style gauge: field elevation and density altitude needles 03691215 DENSITY ALT ×1,000 FT 2,610 DENSITY ALTITUDE · FEET
field elevation density altitude

DENSITY ALTITUDE 2,610 ft

Field elevation 112 ft — the air behaves like 2,610 ft.

PRESSURE ALT
113 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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Frequently asked questions

How high does density altitude get at KBKS in summer?

On a typical July afternoon — around 98 °F at the nearest NOAA normals station — density altitude at Brooks County reaches roughly 2,604 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 KBKS on an average day?

It swings with the seasons: from roughly −15 ft at the coldest month's average temperature to about 1,841 ft at the warmest month's — all from a constant field elevation of 112 ft. The month-by-month table above carries the full year.

What is the field elevation of Brooks County?

112 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KBKS (ICAO) / BKS (FAA), in Falfurrias, Texas.