---
title: "Point weather (multi-model best-match)"
method: GET
path: "/api/v2/weather"
tags: ["Environment"]
---

# Point weather (multi-model best-match)

`GET /api/v2/weather`

Nearest-grid-node current conditions (2 m temperature, 10 m wind with gusts, mean sea-level pressure, relative humidity, total cloud cover, derived feels-like) for any coordinate worldwide, best-matched across sovereign weather models (ECMWF Open Data, NOAA GFS, DWD ICON, ECCC GEM) on a unified 0.25-degree grid. Each value carries its source model. Precipitation is served from the Sugra Weather engine with its own provenance and attribution.

## Query parameters

- `lat` number, nullable — Latitude, decimal degrees. Alias: latitude.
- `lon` number, nullable — Longitude, decimal degrees. Alias: longitude.
- `latitude` number, nullable — Latitude alias (same as lat).
- `longitude` number, nullable — Longitude alias (same as lon).

## Response `200`

Successful Response

- EnvelopeWeatherPoint
  - `data` WeatherPoint, required
    - `location` WeatherPointLocation, required
      - `requested` LatLon, required
        - `lat` number, required
        - `lon` number, required
      - `grid_point` LatLon, required
        - `lat` number, required
        - `lon` number, required
      - `tile` string, required — The 10x10 degree Sugra Earth tile id.
    - `weather` WeatherPointValues, required
      - `temperature_c` number, nullable — 2 m air temperature, degrees Celsius.
      - `temperature_k` number, nullable — 2 m air temperature, Kelvin (model-native).
      - `wind_speed_ms` number, nullable — 10 m wind speed, metres per second.
      - `wind_direction_deg` number, nullable — 10 m wind direction, meteorological degrees (the direction the wind blows FROM).
      - `pressure_hpa` number, nullable — Mean sea-level pressure, hectopascals.
      - `relative_humidity_pct` number, nullable — 2 m relative humidity, percent.
      - `cloud_cover_pct` number, nullable — Total cloud cover, percent.
      - `wind_gusts_ms` number, nullable — 10 m wind gust, metres per second (instantaneous where the model provides it).
      - `apparent_temperature_c` number, nullable — Feels-like temperature, degrees Celsius - DERIVED (Steadman) from the sampled temperature, humidity, and wind; marked derived in provenance.
      - `precipitation_mm` number, nullable — Current precipitation, millimetres - served from the Sugra Weather engine (the model analysis carries no valid precipitation), with its own provenance and attribution entry.
    - `forecast` WeatherPointForecast, required
      - `name` string, required — Primary contributing sovereign model name.
      - `cycle` string, nullable — Model run cycle, YYYYMMDDHH UTC.
      - `run_time` string, nullable — Model run time, ISO 8601 UTC.
      - `valid_time` string, nullable — Valid time of the sampled field, ISO 8601 UTC.
      - `lead_hours` integer, nullable — Forecast lead hours from the run (0 = analysis).
      - `resolution_deg` number, nullable — Grid resolution in degrees.
    - `provenance` object — Per-variable-group source: which model or engine each value came from (keys: temperature, wind, pressure, humidity, cloud, gust, apparent_temperature, precipitation).
    - `attribution` WeatherPointAttributionSet
      - `sources` WeatherSourceAttribution[] — Every sovereign model that contributed a value, primary contributor first.
        - `registry_key` string, required
        - `source_name` string, required
        - `licence` string, required
        - `citation` string, required
        - `disclaimer` string, required
      - `effective_reexport` string, required — Most-restrictive re-export verdict across the contributing sources.
  - `meta` SugraMeta, required — Metadata attached to every /api/v1/* response envelope.
    - `endpoint` string, required — Requested endpoint path.
    - `data_time` string, required — ISO 8601 UTC timestamp of the source data, not of the request.
    - `response_time` string, required — ISO 8601 UTC timestamp when this response was produced.
    - `provider` string, required — API name and version.
    - `source` string, nullable — Identifier of the primary upstream source used for this response.
    - `attribution` string, nullable — Human-readable attribution mandated by an upstream source (e.g. a securities regulator or self-regulatory organization). Present only on responses whose source requires the owner and source to be clearly identified. Do not remove or alter it when using the response.
    - `fallback_used` boolean, nullable — True when the primary source failed and a fallback produced the data.
    - `fallback_chain` string[], nullable — Ordered list of sources attempted, in the order they were tried.
    - `cached` boolean, nullable — True when this response was served from the internal cache.
    - `stale` boolean, nullable — True when the cached response was returned after the upstream rate-limited or errored. Clients can use this to detect degraded data.

## Other responses

- `401` — Missing or invalid `x-api-key` header. JSON body with a stable `code` distinguishing `missing_api_key` (no header sent) from `invalid_api_key` (header sent, key not accepted); any other 401 source carries the generic `unauthorized` with its detail as `reason`. Plus `hint`. `plan` is always null on 401 - an unauthenticated request has no plan; quota exhaustion is 429, not 401.
- `422` — Validation Error
- `429` — Daily rate limit exceeded. Check `X-RateLimit-Reset` for the next window.
- `503` — Upstream source is temporarily unavailable. Retry after a short delay.

---

[API](https://skmtc.net/sugra/apis/sugra-api.md) · [All operations](https://skmtc.net/sugra/apis/sugra-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/sugra/sugra-api/versions/4c4530760ba1/schema)