Stratford, Texas · field elev 3,668 ft
Density Altitude at Stratford Field (H70)
From a field elevation of 3,668 ft, a typical July afternoon at Stratford Field (93 °F) raises density altitude to about 6,638 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 | 35.6 | 2,999 ft | 50.1 | 3,961 ft |
| February | 38.5 | 3,194 ft | 54.0 | 4,214 ft |
| March | 46.6 | 3,732 ft | 62.6 | 4,763 ft |
| April | 54.7 | 4,259 ft | 70.7 | 5,271 ft ▲ |
| May | 64.3 | 4,871 ft | 79.6 | 5,818 ft ▲ |
| June | 74.5 | 5,506 ft | 89.7 | 6,425 ft ▲ |
| July | 78.9 | 5,775 ft | 93.3 | 6,638 ft ▲ |
| August | 76.9 | 5,653 ft | 91.0 | 6,502 ft ▲ |
| September | 69.5 | 5,196 ft | 84.3 | 6,102 ft ▲ |
| October | 57.0 | 4,407 ft | 72.6 | 5,389 ft ▲ |
| November | 44.9 | 3,620 ft | 60.1 | 4,605 ft |
| December | 35.9 | 3,019 ft | 49.9 | 3,948 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 H70
DENSITY ALTITUDE caution
Field elevation 3,668 ft — the air behaves like 6,620 ft.
- PRESSURE ALT
- 3,670 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
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- X43 — Sunray
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Gruver · elev 3,205 ft
- KDHT — Dalhart Municipal
Dalhart · elev 3,991 ft
- E42 — Major Samuel B Cornelius Field
Spearman · elev 3,090 ft
- KBGD — Hutchinson County
Borger · elev 3,055 ft
- KPYX — Perryton Ochiltree County
Perryton · elev 2,918 ft
- KPPA — Perry Lefors Field
Pampa · elev 3,245 ft
Frequently asked questions
How high does density altitude get at H70 in summer?
On a typical July afternoon — around 93 °F at the nearest NOAA normals station — density altitude at Stratford Field reaches roughly 6,638 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 H70 on an average day?
It swings with the seasons: from roughly 2,999 ft at the coldest month's average temperature to about 5,775 ft at the warmest month's — all from a constant field elevation of 3,668 ft. The month-by-month table above carries the full year.
What is the field elevation of Stratford Field?
3,668 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is H70 (FAA), in Stratford, Texas.