Chester, Connecticut · field elev 416 ft
Density Altitude at Chester (KSNC)
Chester sits at 416 ft, and even a typical July afternoon (85 °F) only lifts density altitude to about 2,168 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 | 29.0 | −1,510 ft | 37.7 | −903 ft |
| February | 31.3 | −1,348 ft | 40.6 | −703 ft |
| March | 38.3 | −861 ft | 48.1 | −193 ft |
| April | 49.3 | −112 ft | 60.5 | 630 ft |
| May | 59.5 | 565 ft | 70.7 | 1,289 ft |
| June | 68.6 | 1,155 ft | 79.3 | 1,833 ft |
| July | 74.2 | 1,512 ft | 84.7 | 2,168 ft |
| August | 72.8 | 1,423 ft | 83.5 | 2,094 ft |
| September | 65.7 | 968 ft | 76.4 | 1,651 ft |
| October | 53.9 | 195 ft | 64.4 | 884 ft |
| November | 43.1 | −532 ft | 52.5 | 102 ft |
| December | 34.4 | −1,132 ft | 42.3 | −586 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 KSNC
DENSITY ALTITUDE
Field elevation 416 ft — the air behaves like 2,187 ft.
- PRESSURE ALT
- 417 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
- 42B — Goodspeed
East Haddam · elev 9 ft
- 9B8 — Salmon River Airfield
Marlborough · elev 540 ft
- KMMK — Meriden Markham Municipal
Meriden · elev 103 ft
- KHVN — Tweed/New Haven
New Haven · elev 13 ft
- KGON — Groton-New London
Groton (New London) · elev 9 ft
- KHFD — Hartford-Brainard
Hartford · elev 18 ft
- 4B8 — Robertson Field
Plainville · elev 202 ft
- KIJD — Windham
Willimantic · elev 246 ft
Frequently asked questions
How high does density altitude get at KSNC in summer?
On a typical July afternoon — around 85 °F at the nearest NOAA normals station — density altitude at Chester reaches roughly 2,168 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 KSNC on an average day?
It swings with the seasons: from roughly −1,510 ft at the coldest month's average temperature to about 1,512 ft at the warmest month's — all from a constant field elevation of 416 ft. The month-by-month table above carries the full year.
What is the field elevation of Chester?
416 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KSNC (ICAO) / SNC (FAA), in Chester, Connecticut.