Ronan, Montana · field elev 3,086 ft
Density Altitude at Ronan (7S0)
From a field elevation of 3,086 ft, a typical July afternoon at Ronan (83 °F) raises density altitude to about 5,304 ft — solidly into the range where performance charts deserve a close read.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 27.7 | 1,734 ft | 33.4 | 2,126 ft |
| February | 29.4 | 1,852 ft | 36.9 | 2,364 ft |
| March | 37.8 | 2,425 ft | 47.3 | 3,059 ft |
| April | 44.9 | 2,900 ft | 56.2 | 3,640 ft |
| May | 53.3 | 3,452 ft | 65.8 | 4,253 ft |
| June | 59.8 | 3,871 ft | 72.3 | 4,660 ft |
| July | 68.0 | 4,391 ft | 82.8 | 5,304 ft ▲ |
| August | 67.3 | 4,347 ft | 82.2 | 5,268 ft ▲ |
| September | 58.3 | 3,775 ft | 70.9 | 4,572 ft |
| October | 45.6 | 2,947 ft | 55.6 | 3,601 ft |
| November | 34.3 | 2,188 ft | 41.3 | 2,660 ft |
| December | 27.6 | 1,727 ft | 33.1 | 2,106 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 7S0
DENSITY ALTITUDE caution
Field elevation 3,086 ft — the air behaves like 5,317 ft.
- PRESSURE ALT
- 3,088 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 Montana fields
- 8S1 — Polson
Polson · elev 2,941 ft
- 52S — St Ignatius
St Ignatius · elev 3,006 ft
- S04 — Condon Usfs
Condon · elev 3,686 ft
- S09 — Hot Springs
Hot Springs · elev 2,763 ft
- 53U — Ferndale Airfield
Bigfork · elev 3,072 ft
- 8U4 — Spotted Bear /Usfs/
Spotted Bear · elev 3,672 ft
- 0S1 — Meadow Creek Usfs
Meadow Creek · elev 3,993 ft
- S34 — Plains
Plains · elev 2,467 ft
Frequently asked questions
How high does density altitude get at 7S0 in summer?
On a typical July afternoon — around 83 °F at the nearest NOAA normals station — density altitude at Ronan reaches roughly 5,304 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 7S0 on an average day?
It swings with the seasons: from roughly 1,727 ft at the coldest month's average temperature to about 4,391 ft at the warmest month's — all from a constant field elevation of 3,086 ft. The month-by-month table above carries the full year.
What is the field elevation of Ronan?
3,086 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 7S0 (FAA), in Ronan, Montana.