docsadvancedhit-rate

Hit Rate

GET/api/v1/accuracy/hit-rate

How often the NWS daily high or low forecast matches the observed value (rounded to nearest degree), per metric=high (default) or metric=low. Also returns ±1°F and ±2°F accuracy rates. Omit station_id for all stations.

Parameters

Name	Type	Required	Description
`station_id`	string	optional	ICAO station (omit for all stations)
`city`	string	optional	City name (resolves to station)
`days`	integer	optional	Rolling window Default: 90
`metric`	string	optional	high (default) or low Default: high

Response Fields

Field	Type	Description
`station_id`	string	ICAO station identifier
`city_name`	string	City display name
`total_days`	integer	Total days with forecast-actual pairs
`exact_hits`	integer	Days where ROUND(forecast) = ROUND(actual)
`within_1`	integer	Days where \|error\| <= 1°F
`within_2`	integer	Days where \|error\| <= 2°F
`exact_rate`	float	exact_hits / total_days (0–1)
`within_1_rate`	float	within_1 / total_days (0–1)
`within_2_rate`	float	within_2 / total_days (0–1)

← Revision Stats

Sample Size →

cURL

curl -s -H "Authorization: Bearer $API_KEY" "https://api.deltadaemon.com/api/v1/accuracy/hit-rate?days=90"

JSON

{
  "success": true,
  "data": [
    {
      "station_id": "KLAX",
      "city_name": "Los Angeles",
      "total_days": 87,
      "exact_hits": 19,
      "within_1": 52,
      "within_2": 71,
      "exact_rate": 0.2184,
      "within_1_rate": 0.5977,
      "within_2_rate": 0.8161
    }
  ],
  "metadata": {
    "generated_at": "2026-03-01T12:00:00Z",
    "days_analyzed": 90,
    "total_records": 20,
    "query_time_ms": 5,
    "verification_coverage": {
      "verified_days": 85,
      "preliminary_days": 5,
      "verified_pct": 0.9444
    }
  }
}

cURL

curl -s -H "Authorization: Bearer $API_KEY" "https://api.deltadaemon.com/api/v1/accuracy/hit-rate?days=90"

JSON

{
  "success": true,
  "data": [
    {
      "station_id": "KLAX",
      "city_name": "Los Angeles",
      "total_days": 87,
      "exact_hits": 19,
      "within_1": 52,
      "within_2": 71,
      "exact_rate": 0.2184,
      "within_1_rate": 0.5977,
      "within_2_rate": 0.8161
    }
  ],
  "metadata": {
    "generated_at": "2026-03-01T12:00:00Z",
    "days_analyzed": 90,
    "total_records": 20,
    "query_time_ms": 5,
    "verification_coverage": {
      "verified_days": 85,
      "preliminary_days": 5,
      "verified_pct": 0.9444
    }
  }
}