Troy, New York · field elev 440 ft
Density Altitude at Rensselaer County (5B7)
Rensselaer County sits at 440 ft, and even a typical July afternoon (84 °F) only lifts density altitude to about 2,148 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 | 24.4 | −1,807 ft | 32.8 | −1,213 ft |
| February | 26.8 | −1,636 ft | 36.0 | −990 ft |
| March | 35.7 | −1,011 ft | 45.3 | −352 ft |
| April | 48.1 | −163 ft | 59.2 | 575 ft |
| May | 59.6 | 601 ft | 71.2 | 1,350 ft |
| June | 68.4 | 1,171 ft | 79.4 | 1,868 ft |
| July | 73.1 | 1,471 ft | 83.9 | 2,148 ft |
| August | 71.4 | 1,363 ft | 82.0 | 2,030 ft |
| September | 63.5 | 855 ft | 74.4 | 1,554 ft |
| October | 51.4 | 58 ft | 61.6 | 731 ft |
| November | 40.5 | −680 ft | 49.3 | −82 ft |
| December | 30.4 | −1,382 ft | 38.2 | −838 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 5B7
DENSITY ALTITUDE
Field elevation 440 ft — the air behaves like 2,154 ft.
- PRESSURE ALT
- 441 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
- KALB — Albany International
Albany · elev 285 ft
- 4B0 — South Albany
South Bethlehem · elev 196 ft
- W57 — Round Lake
Round Lake · elev 178 ft
- KSCH — Schenectady County
Schenectady · elev 378 ft
- NY1 — Kline Kill
Ghent · elev 380 ft
- B04 — Garnseys
Schuylerville · elev 100 ft
- 1B8 — Chapin Field
Cambridge · elev 510 ft
- 1B1 — Columbia County
Hudson · elev 198 ft
Frequently asked questions
How high does density altitude get at 5B7 in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Rensselaer County reaches roughly 2,148 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 5B7 on an average day?
It swings with the seasons: from roughly −1,807 ft at the coldest month's average temperature to about 1,471 ft at the warmest month's — all from a constant field elevation of 440 ft. The month-by-month table above carries the full year.
What is the field elevation of Rensselaer County?
440 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 5B7 (FAA), in Troy, New York.