Brighton, Michigan · field elev 973 ft
Density Altitude at Brighton (45G)
Brighton sits at 973 ft, and even a typical July afternoon (82 °F) only lifts density altitude to about 2,700 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 | 22.8 | −1,253 ft | 30.9 | −680 ft |
| February | 24.5 | −1,132 ft | 34.0 | −464 ft |
| March | 34.2 | −450 ft | 44.7 | 269 ft |
| April | 46.3 | 377 ft | 57.6 | 1,127 ft |
| May | 57.8 | 1,140 ft | 69.6 | 1,903 ft |
| June | 67.1 | 1,743 ft | 78.4 | 2,457 ft |
| July | 71.0 | 1,992 ft | 82.3 | 2,700 ft |
| August | 69.3 | 1,883 ft | 80.1 | 2,563 ft |
| September | 62.2 | 1,427 ft | 73.5 | 2,150 ft |
| October | 50.4 | 651 ft | 60.7 | 1,330 ft |
| November | 38.3 | −167 ft | 47.2 | 437 ft |
| December | 28.1 | −877 ft | 35.5 | −360 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 45G
DENSITY ALTITUDE
Field elevation 973 ft — the air behaves like 2,681 ft.
- PRESSURE ALT
- 974 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 Michigan fields
- Y47 — Oakland Southwest
New Hudson · elev 926 ft
- KOZW — Livingston County/Spencer J Hardy
Howell · elev 962 ft
- 9G2 — Prices
Linden · elev 919 ft
- 69G — Richmond Field
Gregory · elev 921 ft
- 65G — Maple Grove
Fowlerville · elev 906 ft
- KPTK — Oakland County International
Pontiac · elev 981 ft
- 1D2 — Canton-Plymouth-Mettetal
Plymouth · elev 696 ft
- KARB — Ann Arbor Municipal
Ann Arbor · elev 839 ft
Frequently asked questions
How high does density altitude get at 45G in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Brighton reaches roughly 2,700 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 45G on an average day?
It swings with the seasons: from roughly −1,253 ft at the coldest month's average temperature to about 1,992 ft at the warmest month's — all from a constant field elevation of 973 ft. The month-by-month table above carries the full year.
What is the field elevation of Brighton?
973 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is 45G (FAA), in Brighton, Michigan.