Shirley, New York · field elev 81 ft
Density Altitude at Brookhaven (KHWV)
Brookhaven sits at 81 ft, and even a typical July afternoon (83 °F) only lifts density altitude to about 1,623 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 | 31.6 | −1,746 ft | 39.2 | −1,216 ft |
| February | 32.8 | −1,662 ft | 41.0 | −1,092 ft |
| March | 39.3 | −1,210 ft | 47.4 | −656 ft |
| April | 48.7 | −568 ft | 57.7 | 33 ft |
| May | 58.5 | 85 ft | 67.6 | 678 ft |
| June | 68.0 | 704 ft | 76.6 | 1,253 ft |
| July | 74.1 | 1,094 ft | 82.5 | 1,623 ft |
| August | 72.8 | 1,012 ft | 81.2 | 1,542 ft |
| September | 65.8 | 562 ft | 74.4 | 1,113 ft |
| October | 54.9 | −153 ft | 63.9 | 439 ft |
| November | 45.3 | −798 ft | 53.9 | −219 ft |
| December | 36.9 | −1,376 ft | 44.5 | −853 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 KHWV
DENSITY ALTITUDE
Field elevation 81 ft — the air behaves like 1,654 ft.
- PRESSURE ALT
- 82 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 New York fields
- 23N — Bayport Aerodrome
Bayport · elev 39 ft
- KISP — Long Island Mac Arthur
New York · elev 99 ft
- KFOK — Francis S Gabreski
Westhampton Beach · elev 66 ft
- 21N — Mattituck
Mattituck · elev 30 ft
- KFRG — Republic
Farmingdale · elev 82 ft
- KJPX — East Hampton Town
East Hampton · elev 55 ft
- KHPN — Westchester County
White Plains · elev 439 ft
- KJFK — John F Kennedy International
New York · elev 13 ft
Frequently asked questions
How high does density altitude get at KHWV in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Brookhaven reaches roughly 1,623 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 KHWV on an average day?
It swings with the seasons: from roughly −1,746 ft at the coldest month's average temperature to about 1,094 ft at the warmest month's — all from a constant field elevation of 81 ft. The month-by-month table above carries the full year.
What is the field elevation of Brookhaven?
81 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KHWV (ICAO) / HWV (FAA), in Shirley, New York.