ISA standard atmosphere at an altitude

Code-Snippets

curl "https://api.oanor.com/densityaltitude-api/v1/isa" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/densityaltitude-api/v1/isa", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/densityaltitude-api/v1/isa");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/densityaltitude-api/v1/isa",
    headers={"x-oanor-key": "oanor_test_..."}
)

Beispiel-Response

Echte Antwort dieses Endpoints, erfasst beim letzten Health-Check.

{
    "data": {
        "note": "The International Standard Atmosphere: from 15 °C and 1013.25 hPa at sea level the temperature falls 1.98 °C per 1,000 ft up to the tropopause (36,089 ft), and pressure and density follow from it. It is the reference every altimeter, performance chart and engine rating is built on — the real atmosphere differs, which is exactly why pressure and density altitude exist. This endpoint covers the troposphere.",
        "inputs": {
            "altitude_ft": 10000
        },
        "temp_c": -4.81,
        "pressure_hpa": 696.82,
        "density_ratio": 0.7385,
        "pressure_ratio": 0.6877,
        "speed_of_sound_kt": 638.3
    },
    "meta": {
        "timestamp": "2026-06-06T23:53:54.833Z",
        "request_id": "e1ab2ead-150b-43d8-a1ba-0fa2b390b52c"
    },
    "status": "ok",
    "message": "ISA atmosphere",
    "success": true
}