Fresno, California · field elev 321 ft
Density Altitude at Sierra Sky Park (E79)
Sierra Sky Park sits at 321 ft, and even a typical July afternoon (98 °F) only lifts density altitude to about 2,845 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 | 48.0 | −318 ft | 55.4 | 177 ft |
| February | 52.3 | −29 ft | 61.3 | 565 ft |
| March | 57.4 | 309 ft | 67.5 | 967 ft |
| April | 62.3 | 630 ft | 73.7 | 1,363 ft |
| May | 70.2 | 1,140 ft | 82.7 | 1,929 ft |
| June | 77.6 | 1,610 ft | 91.4 | 2,464 ft |
| July | 83.5 | 1,978 ft | 97.7 | 2,845 ft |
| August | 82.2 | 1,897 ft | 96.5 | 2,773 ft |
| September | 77.1 | 1,578 ft | 90.7 | 2,421 ft |
| October | 66.7 | 916 ft | 78.7 | 1,679 ft |
| November | 55.1 | 157 ft | 64.9 | 799 ft |
| December | 47.5 | −351 ft | 55.3 | 170 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 E79
DENSITY ALTITUDE
Field elevation 321 ft — the air behaves like 2,863 ft.
- PRESSURE ALT
- 322 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 California fields
- KFCH — Fresno Chandler Exec
Fresno · elev 280 ft
- KFAT — Fresno Yosemite International
Fresno · elev 336 ft
- KMAE — Madera Municipal
Madera · elev 255 ft
- 0Q4 — Selma
Selma · elev 305 ft
- O32 — Reedley Municipal
Reedley · elev 386 ft
- 2O6 — Chowchilla
Chowchilla · elev 243 ft
- F34 — Firebaugh
Firebaugh · elev 157 ft
- KHJO — Hanford Municipal
Hanford · elev 240 ft
Frequently asked questions
How high does density altitude get at E79 in summer?
On a typical July afternoon — around 98 °F at the nearest NOAA normals station — density altitude at Sierra Sky Park reaches roughly 2,845 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 E79 on an average day?
It swings with the seasons: from roughly −351 ft at the coldest month's average temperature to about 1,978 ft at the warmest month's — all from a constant field elevation of 321 ft. The month-by-month table above carries the full year.
What is the field elevation of Sierra Sky Park?
321 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is E79 (FAA), in Fresno, California.