Highland, Illinois · field elev 537 ft
Density Altitude at Highland-Winet (H07)
Highland-Winet sits at 537 ft, and even a typical July afternoon (88 °F) only lifts density altitude to about 2,538 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 | 30.3 | −1,267 ft | 39.1 | −655 ft |
| February | 34.8 | −953 ft | 44.8 | −266 ft |
| March | 44.6 | −279 ft | 54.8 | 404 ft |
| April | 55.7 | 464 ft | 66.6 | 1,175 ft |
| May | 65.9 | 1,130 ft | 75.9 | 1,767 ft |
| June | 74.9 | 1,704 ft | 84.8 | 2,322 ft |
| July | 78.2 | 1,912 ft | 88.3 | 2,538 ft |
| August | 76.8 | 1,824 ft | 87.4 | 2,482 ft |
| September | 69.5 | 1,361 ft | 81.0 | 2,087 ft |
| October | 57.9 | 609 ft | 69.5 | 1,361 ft |
| November | 45.3 | −232 ft | 55.1 | 424 ft |
| December | 34.8 | −953 ft | 43.3 | −368 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 H07
DENSITY ALTITUDE
Field elevation 537 ft — the air behaves like 2,519 ft.
- PRESSURE ALT
- 538 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 Illinois fields
- KGRE — Greenville
Greenville · elev 541 ft
- KBLV — Scott AFB/Midamerica St Louis
Belleville · elev 459 ft
- KALN — St Louis Regional
Alton/St Louis · elev 544 ft
- 3LF — Litchfield Municipal
Litchfield · elev 691 ft
- KVLA — Vandalia Municipal
Vandalia · elev 537 ft
- KCPS — St Louis Downtown
Cahokia/St Louis · elev 413 ft
- KENL — Centralia Municipal
Centralia · elev 534 ft
- KSLO — Salem-Leckrone
Salem · elev 573 ft
Frequently asked questions
How high does density altitude get at H07 in summer?
On a typical July afternoon — around 88 °F at the nearest NOAA normals station — density altitude at Highland-Winet reaches roughly 2,538 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 H07 on an average day?
It swings with the seasons: from roughly −1,267 ft at the coldest month's average temperature to about 1,912 ft at the warmest month's — all from a constant field elevation of 537 ft. The month-by-month table above carries the full year.
What is the field elevation of Highland-Winet?
537 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is H07 (FAA), in Highland, Illinois.