Brigham City, Utah · field elev 4,230 ft
Density Altitude at Brigham City Regional (KBMC)
From a field elevation of 4,230 ft, a typical July afternoon at Brigham City Regional (91 °F) raises density altitude to about 7,182 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 | 27.2 | 3,125 ft | 36.4 | 3,749 ft |
| February | 32.4 | 3,480 ft | 42.5 | 4,156 ft |
| March | 42.3 | 4,142 ft | 54.0 | 4,905 ft |
| April | 48.8 | 4,569 ft | 61.5 | 5,383 ft ▲ |
| May | 57.5 | 5,129 ft | 71.3 | 5,994 ft ▲ |
| June | 66.2 | 5,678 ft | 81.9 | 6,640 ft ▲ |
| July | 74.3 | 6,179 ft | 91.0 | 7,182 ft ▲ |
| August | 72.4 | 6,062 ft | 89.2 | 7,076 ft ▲ |
| September | 62.8 | 5,465 ft | 79.2 | 6,477 ft ▲ |
| October | 50.3 | 4,666 ft | 64.8 | 5,590 ft ▲ |
| November | 38.3 | 3,877 ft | 49.6 | 4,621 ft |
| December | 28.7 | 3,228 ft | 37.6 | 3,830 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 KBMC
DENSITY ALTITUDE caution
Field elevation 4,230 ft — the air behaves like 7,182 ft.
- PRESSURE ALT
- 4,232 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 Utah fields
- KLGU — Logan-Cache
Logan · elev 4,457 ft
- KOGD — Ogden-Hinckley
Ogden · elev 4,473 ft
- 2UT — Fremont Island Upper
Hooper · elev 4,654 ft
- 1UT — Fremont Island Lower
Hooper · elev 4,234 ft
- 42U — Morgan County
Morgan · elev 5,020 ft
- KBTF — Skypark
Bountiful · elev 4,237 ft
- KSLC — Salt Lake City International
Salt Lake City · elev 4,231 ft
- KSVR — South Valley Regional
Salt Lake City · elev 4,606 ft
Frequently asked questions
How high does density altitude get at KBMC in summer?
On a typical July afternoon — around 91 °F at the nearest NOAA normals station — density altitude at Brigham City Regional reaches roughly 7,182 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 KBMC on an average day?
It swings with the seasons: from roughly 3,125 ft at the coldest month's average temperature to about 6,179 ft at the warmest month's — all from a constant field elevation of 4,230 ft. The month-by-month table above carries the full year.
What is the field elevation of Brigham City Regional?
4,230 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KBMC (ICAO) / BMC (FAA), in Brigham City, Utah.