Hartford, Connecticut · field elev 18 ft
Density Altitude at Hartford-Brainard (KHFD)
Hartford-Brainard sits at 18 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 1,676 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 | 28.6 | −2,037 ft | 36.8 | −1,461 ft |
| February | 30.8 | −1,881 ft | 39.5 | −1,274 ft |
| March | 38.6 | −1,336 ft | 47.6 | −721 ft |
| April | 50.0 | −559 ft | 60.1 | 113 ft |
| May | 60.5 | 139 ft | 70.9 | 813 ft |
| June | 69.7 | 736 ft | 79.6 | 1,364 ft |
| July | 75.2 | 1,087 ft | 84.6 | 1,676 ft |
| August | 73.6 | 985 ft | 83.0 | 1,577 ft |
| September | 65.8 | 485 ft | 75.6 | 1,112 ft |
| October | 54.0 | −291 ft | 63.7 | 348 ft |
| November | 43.3 | −1,013 ft | 52.1 | −418 ft |
| December | 33.8 | −1,671 ft | 41.7 | −1,123 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 KHFD
DENSITY ALTITUDE
Field elevation 18 ft — the air behaves like 1,701 ft.
- PRESSURE ALT
- 19 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 Connecticut fields
- 4B8 — Robertson Field
Plainville · elev 202 ft
- 7B6 — Skylark Airpark
Warehouse Point · elev 120 ft
- 4B9 — Simsbury
Simsbury · elev 195 ft
- KBDL — Bradley International
Windsor Locks · elev 173 ft
- 9B8 — Salmon River Airfield
Marlborough · elev 540 ft
- 7B9 — Ellington
Ellington · elev 253 ft
- KMMK — Meriden Markham Municipal
Meriden · elev 103 ft
- N41 — Mount Tobe
Waterbury · elev 850 ft
Frequently asked questions
How high does density altitude get at KHFD in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Hartford-Brainard reaches roughly 1,676 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 KHFD on an average day?
It swings with the seasons: from roughly −2,037 ft at the coldest month's average temperature to about 1,087 ft at the warmest month's — all from a constant field elevation of 18 ft. The month-by-month table above carries the full year.
What is the field elevation of Hartford-Brainard?
18 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KHFD (ICAO) / HFD (FAA), in Hartford, Connecticut.