Washington, Missouri · field elev 488 ft
Density Altitude at Washington Regional (KFYG)
Washington Regional sits at 488 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 2,478 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 | 30.1 | −1,343 ft | 39.9 | −661 ft |
| February | 34.4 | −1,042 ft | 45.4 | −286 ft |
| March | 44.0 | −381 ft | 55.8 | 410 ft |
| April | 55.1 | 364 ft | 67.3 | 1,160 ft |
| May | 65.0 | 1,011 ft | 75.8 | 1,701 ft |
| June | 73.7 | 1,568 ft | 83.8 | 2,201 ft |
| July | 77.6 | 1,814 ft | 88.3 | 2,478 ft |
| August | 75.9 | 1,707 ft | 86.9 | 2,392 ft |
| September | 67.7 | 1,185 ft | 79.5 | 1,933 ft |
| October | 56.3 | 443 ft | 68.9 | 1,262 ft |
| November | 44.0 | −381 ft | 55.3 | 377 ft |
| December | 34.4 | −1,042 ft | 44.5 | −347 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 KFYG
DENSITY ALTITUDE
Field elevation 488 ft — the air behaves like 2,459 ft.
- PRESSURE ALT
- 489 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 Missouri fields
- KSUS — Spirit Of St Louis
St Louis · elev 463 ft
- M71 — Greensfield
Moscow Mills · elev 559 ft
- KUUV — Sullivan Regional
Sullivan · elev 933 ft
- 1H0 — Creve Coeur
St Louis · elev 462 ft
- 63M — Hermann Municipal
Hermann · elev 508 ft
- KSTL — St Louis Lambert International
St Louis · elev 617 ft
- KSET — St Charles County Regional/Smartt Field
St Charles · elev 437 ft
- KUBX — Cuba Municipal
Cuba · elev 1,023 ft
Frequently asked questions
How high does density altitude get at KFYG in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Washington Regional reaches roughly 2,478 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 KFYG on an average day?
It swings with the seasons: from roughly −1,343 ft at the coldest month's average temperature to about 1,814 ft at the warmest month's — all from a constant field elevation of 488 ft. The month-by-month table above carries the full year.
What is the field elevation of Washington Regional?
488 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KFYG (ICAO) / FYG (FAA), in Washington, Missouri.