Browning, Montana · field elev 4,657 ft
Density Altitude at Starr-Browning Airstrip (8S0)
From a field elevation of 4,657 ft, a typical August afternoon at Starr-Browning Airstrip (74 °F) raises density altitude to about 6,680 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 | 21.7 | 3,278 ft | 30.4 | 3,874 ft |
| February | 21.8 | 3,285 ft | 30.5 | 3,881 ft |
| March | 28.0 | 3,711 ft | 37.1 | 4,325 ft |
| April | 36.1 | 4,258 ft | 45.6 | 4,886 ft |
| May | 44.9 | 4,841 ft | 55.6 | 5,532 ft ▲ |
| June | 52.7 | 5,346 ft | 64.1 | 6,069 ft ▲ |
| July | 59.9 | 5,805 ft | 73.8 | 6,668 ft ▲ |
| August | 59.2 | 5,761 ft | 74.0 | 6,680 ft ▲ |
| September | 50.5 | 5,205 ft | 63.3 | 6,018 ft ▲ |
| October | 39.6 | 4,491 ft | 49.9 | 5,166 ft ▲ |
| November | 29.0 | 3,779 ft | 36.3 | 4,272 ft |
| December | 21.9 | 3,291 ft | 29.3 | 3,800 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 8S0
DENSITY ALTITUDE caution
Field elevation 4,657 ft — the air behaves like 6,680 ft.
- PRESSURE ALT
- 4,659 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
- H28 — Whetstone International
Port Of Del Bonita · elev 4,336 ft
- KCTB — Cut Bank International
Cut Bank · elev 3,858 ft
- 8U2 — Schafer /Usfs/
Schafer · elev 4,856 ft
- 7S7 — Valier
Valier · elev 3,826 ft
- 8U4 — Spotted Bear /Usfs/
Spotted Bear · elev 3,672 ft
- 0S1 — Meadow Creek Usfs
Meadow Creek · elev 3,993 ft
- 53U — Ferndale Airfield
Bigfork · elev 3,072 ft
- 58S — Whitefish
Whitefish · elev 3,066 ft
Frequently asked questions
How high does density altitude get at 8S0 in summer?
On a typical August afternoon — around 74 °F at the nearest NOAA normals station — density altitude at Starr-Browning Airstrip reaches roughly 6,680 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 8S0 on an average day?
It swings with the seasons: from roughly 3,278 ft at the coldest month's average temperature to about 5,805 ft at the warmest month's — all from a constant field elevation of 4,657 ft. The month-by-month table above carries the full year.
What is the field elevation of Starr-Browning Airstrip?
4,657 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 8S0 (FAA), in Browning, Montana.