Hereford, Texas · field elev 3,788 ft
Density Altitude at Hereford Municipal (KHRX)
From a field elevation of 3,788 ft, a typical July afternoon at Hereford Municipal (92 °F) raises density altitude to about 6,730 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 | 36.8 | 3,228 ft | 51.1 | 4,174 ft |
| February | 40.4 | 3,469 ft | 55.5 | 4,458 ft |
| March | 48.3 | 3,991 ft | 64.3 | 5,018 ft ▲ |
| April | 56.1 | 4,497 ft | 72.4 | 5,523 ft ▲ |
| May | 65.7 | 5,106 ft | 81.1 | 6,055 ft ▲ |
| June | 75.4 | 5,707 ft | 90.2 | 6,600 ft ▲ |
| July | 78.6 | 5,903 ft | 92.4 | 6,730 ft ▲ |
| August | 77.1 | 5,812 ft | 90.7 | 6,630 ft ▲ |
| September | 69.7 | 5,356 ft | 83.5 | 6,200 ft ▲ |
| October | 57.9 | 4,612 ft | 72.6 | 5,535 ft ▲ |
| November | 45.8 | 3,827 ft | 60.3 | 4,765 ft |
| December | 37.4 | 3,269 ft | 51.1 | 4,174 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 KHRX
DENSITY ALTITUDE caution
Field elevation 3,788 ft — the air behaves like 6,707 ft.
- PRESSURE ALT
- 3,790 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 Texas fields
- T55 — Dimmitt Municipal
Dimmitt · elev 3,883 ft
- E52 — Oldham County
Vega · elev 3,995 ft
- 1E7 — Buffalo
Amarillo · elev 3,640 ft
- 1E4 — Palo Duro
Amarillo · elev 3,639 ft
- KTDW — Tradewind
Amarillo · elev 3,649 ft
- H81 — River Falls
Amarillo · elev 3,585 ft
- I06 — City Of Tulia/Swisher County Municipal
Tulia · elev 3,503 ft
- KAMA — Rick Husband Amarillo International
Amarillo · elev 3,607 ft
Frequently asked questions
How high does density altitude get at KHRX in summer?
On a typical July afternoon — around 92 °F at the nearest NOAA normals station — density altitude at Hereford Municipal reaches roughly 6,730 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 KHRX on an average day?
It swings with the seasons: from roughly 3,228 ft at the coldest month's average temperature to about 5,903 ft at the warmest month's — all from a constant field elevation of 3,788 ft. The month-by-month table above carries the full year.
What is the field elevation of Hereford Municipal?
3,788 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KHRX (ICAO) / HRX (FAA), in Hereford, Texas.