Harlowton, Montana · field elev 4,312 ft
Density Altitude at Wheatland County At Harlowton (KHWQ)
From a field elevation of 4,312 ft, a typical July afternoon at Wheatland County At Harlowton (84 °F) raises density altitude to about 6,860 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 | 24.5 | 3,041 ft | 35.7 | 3,804 ft |
| February | 26.2 | 3,158 ft | 38.2 | 3,971 ft |
| March | 33.7 | 3,669 ft | 47.5 | 4,585 ft |
| April | 41.0 | 4,158 ft | 54.3 | 5,025 ft ▲ |
| May | 50.7 | 4,793 ft | 64.3 | 5,659 ft ▲ |
| June | 59.6 | 5,363 ft | 73.6 | 6,235 ft ▲ |
| July | 66.9 | 5,821 ft | 83.9 | 6,860 ft ▲ |
| August | 65.8 | 5,753 ft | 83.2 | 6,818 ft ▲ |
| September | 56.1 | 5,140 ft | 72.5 | 6,168 ft ▲ |
| October | 43.5 | 4,323 ft | 57.4 | 5,223 ft ▲ |
| November | 32.6 | 3,595 ft | 44.6 | 4,395 ft |
| December | 25.0 | 3,076 ft | 35.4 | 3,784 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 KHWQ
DENSITY ALTITUDE caution
Field elevation 4,312 ft — the air behaves like 6,866 ft.
- PRESSURE ALT
- 4,314 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
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- AIR DENSITY
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- 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
- 8U0 — Ryegate
Ryegate · elev 3,689 ft
- M42 — Russian Flat
Russian Flat · elev 6,336 ft
- 80S — Lavina
Lavina · elev 3,512 ft
- 6S0 — Big Timber At Howard Field
Big Timber · elev 4,494 ft
- KLWT — Lewistown Municipal
Lewistown · elev 4,170 ft
- 9U1 — Wilsall
Wilsall · elev 5,140 ft
- 7S6 — White Sulphur Springs
White Sulphur Springs · elev 5,065 ft
- S64 — Stanford/Biggerstaff Field
Stanford · elev 4,328 ft
Frequently asked questions
How high does density altitude get at KHWQ in summer?
On a typical July afternoon — around 84 °F at the nearest NOAA normals station — density altitude at Wheatland County At Harlowton reaches roughly 6,860 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 KHWQ on an average day?
It swings with the seasons: from roughly 3,041 ft at the coldest month's average temperature to about 5,821 ft at the warmest month's — all from a constant field elevation of 4,312 ft. The month-by-month table above carries the full year.
What is the field elevation of Wheatland County At Harlowton?
4,312 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KHWQ (ICAO) / HWQ (FAA), in Harlowton, Montana.