Oxford, Connecticut · field elev 730 ft
Density Altitude at Waterbury-Oxford (KOXC)
Waterbury-Oxford sits at 730 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 2,564 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 | 28.0 | −1,188 ft | 35.5 | −663 ft |
| February | 30.3 | −1,026 ft | 38.8 | −436 ft |
| March | 38.4 | −463 ft | 47.7 | 170 ft |
| April | 49.9 | 317 ft | 60.5 | 1,017 ft |
| May | 60.4 | 1,011 ft | 71.5 | 1,725 ft |
| June | 69.4 | 1,592 ft | 80.1 | 2,266 ft |
| July | 74.5 | 1,915 ft | 84.9 | 2,564 ft |
| August | 72.4 | 1,782 ft | 82.2 | 2,397 ft |
| September | 64.7 | 1,290 ft | 74.7 | 1,928 ft |
| October | 52.8 | 510 ft | 62.5 | 1,147 ft |
| November | 42.2 | −203 ft | 50.4 | 351 ft |
| December | 33.2 | −823 ft | 40.1 | −346 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 KOXC
DENSITY ALTITUDE
Field elevation 730 ft — the air behaves like 2,570 ft.
- PRESSURE ALT
- 731 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
- N41 — Mount Tobe
Waterbury · elev 850 ft
- KMMK — Meriden Markham Municipal
Meriden · elev 103 ft
- 11N — Candlelight Farms
New Milford · elev 675 ft
- KDXR — Danbury Municipal
Danbury · elev 457 ft
- KHVN — Tweed/New Haven
New Haven · elev 13 ft
- 4B8 — Robertson Field
Plainville · elev 202 ft
- KBDR — Bridgeport/Sikorsky
Bridgeport · elev 9 ft
- KHFD — Hartford-Brainard
Hartford · elev 18 ft
Frequently asked questions
How high does density altitude get at KOXC in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Waterbury-Oxford reaches roughly 2,564 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 KOXC on an average day?
It swings with the seasons: from roughly −1,188 ft at the coldest month's average temperature to about 1,915 ft at the warmest month's — all from a constant field elevation of 730 ft. The month-by-month table above carries the full year.
What is the field elevation of Waterbury-Oxford?
730 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KOXC (ICAO) / OXC (FAA), in Oxford, Connecticut.