Ontario, Oregon · field elev 2,193 ft
Density Altitude at Ontario Municipal (KONO)
Ontario Municipal sits at 2,193 ft, and even a typical July afternoon (95 °F) only lifts density altitude to about 4,960 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 | 31.3 | 870 ft | 38.3 | 1,350 ft |
| February | 37.5 | 1,296 ft | 46.9 | 1,928 ft |
| March | 46.1 | 1,875 ft | 58.4 | 2,683 ft |
| April | 52.7 | 2,312 ft | 66.0 | 3,170 ft |
| May | 62.1 | 2,921 ft | 76.4 | 3,824 ft |
| June | 69.8 | 3,411 ft | 84.7 | 4,334 ft |
| July | 78.3 | 3,941 ft | 95.1 | 4,960 ft |
| August | 76.2 | 3,811 ft | 93.4 | 4,858 ft |
| September | 66.0 | 3,170 ft | 82.7 | 4,212 ft |
| October | 52.8 | 2,318 ft | 66.9 | 3,228 ft |
| November | 39.7 | 1,445 ft | 49.8 | 2,121 ft |
| December | 31.6 | 891 ft | 38.9 | 1,391 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 KONO
DENSITY ALTITUDE
Field elevation 2,193 ft — the air behaves like 4,954 ft.
- PRESSURE ALT
- 2,194 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
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Frequently asked questions
How high does density altitude get at KONO in summer?
On a typical July afternoon — around 95 °F at the nearest NOAA normals station — density altitude at Ontario Municipal reaches roughly 4,960 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 KONO on an average day?
It swings with the seasons: from roughly 870 ft at the coldest month's average temperature to about 3,941 ft at the warmest month's — all from a constant field elevation of 2,193 ft. The month-by-month table above carries the full year.
What is the field elevation of Ontario Municipal?
2,193 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KONO (ICAO) / ONO (FAA), in Ontario, Oregon.