SourceFinch Verified · Weather observations & forecasts

Current aviation weather observations

Reads the publisher-recommended complete current METAR cache, one latest report per station keyed by station_id. Retains the complete raw report alongside parsed meteorological measurements. Visibility and wind direction remain publisher text so values such as

  • Failing · 23.8% of observed runs successful
  • United States; global aviation observations
  • Publisher's public bulk file or feed
  • 28 typed fields

Monitor this sourceAPI, CLI, SDK and MCP

At a glance

Publisher
NOAA / National Weather Service Aviation Weather Center
Jurisdiction
United States; global aviation observations
Publisher updates
Publisher updates current data; monitor hourly
SourceFinch checks
Hourly by default
Records per run
5,034 in the latest run
Record key
station_id
Acquired from
Publisher's public bulk file or feed: https://aviationweather.gov/data/cache/metars.cache.xml.gz
Recipe
v1.0.0, approved October 6, 2026
Verified since
October 6, 2026
Last green run
October 7, 2026

What the data contains

Reads the publisher-recommended complete current METAR cache, one latest report per station keyed by station_id. Retains the complete raw report alongside parsed meteorological measurements. Visibility and wind direction remain publisher text so values such as 6+ and VRB are not changed into misleading numbers. Changes update the station record; departure from the current cache is not a station closure or deletion. This is an observed snapshot, not a historical backfill. SourceFinch does not provide flight planning or navigation advice.

Fields and types

Every record has these fields. The key field station_id identifies a record across runs, so changes are reported field by field.

FieldTypeDescription
station_idkeystringPublisher station_id; retained without product-specific enrichment.
raw_textstringPublisher raw_text; retained without product-specific enrichment.
observation_timedatetimePublisher observation_time; retained without product-specific enrichment.
latitudenumber, nullablePublisher latitude; retained without product-specific enrichment.
longitudenumber, nullablePublisher longitude; retained without product-specific enrichment.
temp_cnumber, nullablePublisher temp_c; retained without product-specific enrichment.
dewpoint_cnumber, nullablePublisher dewpoint_c; retained without product-specific enrichment.
wind_dir_degreesstring, nullablePublisher wind_dir_degrees; retained without product-specific enrichment.
wind_speed_ktnumber, nullablePublisher wind_speed_kt; retained without product-specific enrichment.
wind_gust_ktnumber, nullablePublisher wind_gust_kt; retained without product-specific enrichment.
visibility_statute_mistring, nullablePublisher visibility_statute_mi; retained without product-specific enrichment.
altim_in_hgstring, nullablePublisher altim_in_hg; retained without product-specific enrichment.
sea_level_pressure_mbstring, nullablePublisher sea_level_pressure_mb; retained without product-specific enrichment.
wx_stringstring, nullablePublisher wx_string; retained without product-specific enrichment.
flight_categorystring, nullablePublisher flight_category; retained without product-specific enrichment.
three_hr_pressure_tendency_mbstring, nullablePublisher three_hr_pressure_tendency_mb; retained without product-specific enrichment.
maxT_cstring, nullablePublisher maxT_c; retained without product-specific enrichment.
minT_cstring, nullablePublisher minT_c; retained without product-specific enrichment.
maxT24hr_cstring, nullablePublisher maxT24hr_c; retained without product-specific enrichment.
minT24hr_cstring, nullablePublisher minT24hr_c; retained without product-specific enrichment.
precip_instring, nullablePublisher precip_in; retained without product-specific enrichment.
pcp3hr_instring, nullablePublisher pcp3hr_in; retained without product-specific enrichment.
pcp6hr_instring, nullablePublisher pcp6hr_in; retained without product-specific enrichment.
pcp24hr_instring, nullablePublisher pcp24hr_in; retained without product-specific enrichment.
snow_instring, nullablePublisher snow_in; retained without product-specific enrichment.
vert_vis_ftstring, nullablePublisher vert_vis_ft; retained without product-specific enrichment.
metar_typestring, nullablePublisher metar_type; retained without product-specific enrichment.
elevation_mstring, nullablePublisher elevation_m; retained without product-specific enrichment.

Sample output

The first 5 of 5,034 records from SourceFinch's own run on October 7, 2026, exactly as delivered.

FieldRecord 1Record 2Record 3Record 4Record 5
station_idKQFUKQEQKQFVKQEPKQEW
raw_textMETAR KQFU 070310Z AUTO 14001KT 9999 CLR 23/06 A3024 RMK A02 TSNOMETAR KQEQ 070310Z AUTO 29002KT 9999 CLR 21/08 A3024 RMK A02 TSNOMETAR KQFV 070310Z AUTO 11004KT 9999 CLR 21/04 A3022 RMK A02 TSNOMETAR KQEP 070310Z AUTO 36002KT 9999 CLR 21/07 A3022 RMK A02 TSNOMETAR KQEW 070310Z AUTO 22002KT 9999 // CLR 23/05 A3018 RMK A02 TSNO
observation_time2026-10-07T03:10:00.000Z2026-10-07T03:10:00.000Z2026-10-07T03:10:00.000Z2026-10-07T03:10:00.000Z2026-10-07T03:10:00.000Z
latitude-99.99-99.99-99.99-99.99-99.99
longitude-99.99-99.99-99.99-99.99-99.99
temp_c2321212123
dewpoint_c68475
wind_dir_degrees140290110360220
wind_speed_kt12422
wind_gust_kt—————
visibility_statute_mi6+6+6+6+6+
altim_in_hg30.2430.2430.2230.2230.18
sea_level_pressure_mb—————
wx_string—————
flight_categoryVFRVFRVFRVFRVFR
three_hr_pressure_tendency_mb—————
maxT_c—————
minT_c—————
maxT24hr_c—————
minT24hr_c—————
precip_in—————
pcp3hr_in—————
pcp6hr_in—————
pcp24hr_in—————
snow_in—————
vert_vis_ft—————
metar_typeMETARMETARMETARMETARMETAR
elevation_m99999999999999999999
Sample as JSON
[
  {
    "maxT_c": null,
    "minT_c": null,
    "temp_c": 23,
    "snow_in": null,
    "latitude": -99.99,
    "raw_text": "METAR KQFU 070310Z AUTO 14001KT 9999 CLR 23/06 A3024 RMK A02 TSNO",
    "longitude": -99.99,
    "pcp3hr_in": null,
    "pcp6hr_in": null,
    "precip_in": null,
    "wx_string": null,
    "dewpoint_c": 6,
    "maxT24hr_c": null,
    "metar_type": "METAR",
    "minT24hr_c": null,
    "pcp24hr_in": null,
    "station_id": "KQFU",
    "altim_in_hg": "30.24",
    "elevation_m": "9999",
    "vert_vis_ft": null,
    "wind_gust_kt": null,
    "wind_speed_kt": 1,
    "flight_category": "VFR",
    "observation_time": "2026-10-07T03:10:00.000Z",
    "wind_dir_degrees": "140",
    "sea_level_pressure_mb": null,
    "visibility_statute_mi": "6+",
    "three_hr_pressure_tendency_mb": null
  },
  {
    "maxT_c": null,
    "minT_c": null,
    "temp_c": 21,
    "snow_in": null,
    "latitude": -99.99,
    "raw_text": "METAR KQEQ 070310Z AUTO 29002KT 9999 CLR 21/08 A3024 RMK A02 TSNO",
    "longitude": -99.99,
    "pcp3hr_in": null,
    "pcp6hr_in": null,
    "precip_in": null,
    "wx_string": null,
    "dewpoint_c": 8,
    "maxT24hr_c": null,
    "metar_type": "METAR",
    "minT24hr_c": null,
    "pcp24hr_in": null,
    "station_id": "KQEQ",
    "altim_in_hg": "30.24",
    "elevation_m": "9999",
    "vert_vis_ft": null,
    "wind_gust_kt": null,
    "wind_speed_kt": 2,
    "flight_category": "VFR",
    "observation_time": "2026-10-07T03:10:00.000Z",
    "wind_dir_degrees": "290",
    "sea_level_pressure_mb": null,
    "visibility_statute_mi": "6+",
    "three_hr_pressure_tendency_mb": null
  },
  {
    "maxT_c": null,
    "minT_c": null,
    "temp_c": 21,
    "snow_in": null,
    "latitude": -99.99,
    "raw_text": "METAR KQFV 070310Z AUTO 11004KT 9999 CLR 21/04 A3022 RMK A02 TSNO",
    "longitude": -99.99,
    "pcp3hr_in": null,
    "pcp6hr_in": null,
    "precip_in": null,
    "wx_string": null,
    "dewpoint_c": 4,
    "maxT24hr_c": null,
    "metar_type": "METAR",
    "minT24hr_c": null,
    "pcp24hr_in": null,
    "station_id": "KQFV",
    "altim_in_hg": "30.22",
    "elevation_m": "9999",
    "vert_vis_ft": null,
    "wind_gust_kt": null,
    "wind_speed_kt": 4,
    "flight_category": "VFR",
    "observation_time": "2026-10-07T03:10:00.000Z",
    "wind_dir_degrees": "110",
    "sea_level_pressure_mb": null,
    "visibility_statute_mi": "6+",
    "three_hr_pressure_tendency_mb": null
  },
  {
    "maxT_c": null,
    "minT_c": null,
    "temp_c": 21,
    "snow_in": null,
    "latitude": -99.99,
    "raw_text": "METAR KQEP 070310Z AUTO 36002KT 9999 CLR 21/07 A3022 RMK A02 TSNO",
    "longitude": -99.99,
    "pcp3hr_in": null,
    "pcp6hr_in": null,
    "precip_in": null,
    "wx_string": null,
    "dewpoint_c": 7,
    "maxT24hr_c": null,
    "metar_type": "METAR",
    "minT24hr_c": null,
    "pcp24hr_in": null,
    "station_id": "KQEP",
    "altim_in_hg": "30.22",
    "elevation_m": "9999",
    "vert_vis_ft": null,
    "wind_gust_kt": null,
    "wind_speed_kt": 2,
    "flight_category": "VFR",
    "observation_time": "2026-10-07T03:10:00.000Z",
    "wind_dir_degrees": "360",
    "sea_level_pressure_mb": null,
    "visibility_statute_mi": "6+",
    "three_hr_pressure_tendency_mb": null
  },
  {
    "maxT_c": null,
    "minT_c": null,
    "temp_c": 23,
    "snow_in": null,
    "latitude": -99.99,
    "raw_text": "METAR KQEW 070310Z AUTO 22002KT 9999 // CLR 23/05 A3018 RMK A02 TSNO",
    "longitude": -99.99,
    "pcp3hr_in": null,
    "pcp6hr_in": null,
    "precip_in": null,
    "wx_string": null,
    "dewpoint_c": 5,
    "maxT24hr_c": null,
    "metar_type": "METAR",
    "minT24hr_c": null,
    "pcp24hr_in": null,
    "station_id": "KQEW",
    "altim_in_hg": "30.18",
    "elevation_m": "9999",
    "vert_vis_ft": null,
    "wind_gust_kt": null,
    "wind_speed_kt": 2,
    "flight_category": "VFR",
    "observation_time": "2026-10-07T03:10:00.000Z",
    "wind_dir_degrees": "220",
    "sea_level_pressure_mb": null,
    "visibility_statute_mi": "6+",
    "three_hr_pressure_tendency_mb": null
  }
]

Evidence behind every value

  • Each run keeps the publisher's exact response, hashed with SHA-256. This sample came from a response with hash d0ec9e2e0c9b3c613d772d747c12ce621ccb5a1f9b0ae3c5794c1cbe6eeba273.
  • Every value records where it came from in that response: a CSS path into the retained capture.
  • Each run gets a signed manifest (Ed25519) timestamped by an RFC 3161 authority: this run's manifest hash is 516fe5ac6859387f5bcf25ce1619587316a88dac2c7d1a1bf1f400d5ca06a15e, timestamped October 7, 2026.
  • The compliance state at capture is recorded with the evidence: robots.txt hash and verdict, AI-preference signals, crawler identity and the usage rights below.
  • Download any run as an evidence bundle (WACZ) and check it offline, without trusting SourceFinch: sourcefinch verify-bundle run.wacz.

Terms posture and usage rights

Terms
Automated access permitted · publisher's terms
robots.txt
None published (HTTP 404); access allowed under RFC 9309
AI-preference signals
None observed at review
Public record
Yes. Publisher data-use policy reviewed in browser; official machine-readable data only.
Reviewed
October 6, 2026; next review April 6, 2027
Licence basis
U.S. government work (public domain)
Commercial use
Allowed
Redistribution
Allowed
Attribution
Required (text below)

Publisher-authored government data are in the public domain unless otherwise marked. Credit the publisher; do not imply affiliation, endorsement or that transformed records are government-issued products. No logos, photographs or third-party imagery are collected.

NOAA / National Weather Service Aviation Weather Center. SourceFinch is independent and is not endorsed by the publisher.

Usage rights travel with every record SourceFinch delivers (API, exports, webhooks and evidence bundles). They are our documented understanding of the publisher's stated terms, not legal advice.

Reliability

Runs, last 30 days
21
Green
23.8%
Failed
16
Median run time
7.8 s
Latest run
failed, October 7, 2026

Measured on completed runs of this recipe version across SourceFinch, anonymized, within a rolling 30-day window. First successful observation: October 6, 2026. A new recipe has only the history collected since that date; this is not a 30-day uptime guarantee.

Use it

Every surface creates the same monitor from this Verified recipe. Monitors keep record history, report field-level changes and deliver by webhook, export or email. You confirm you have the right to collect the source (rights: true).

Console

Open this recipe in the console: it preserves the reviewed URL, fields and record key. Review the latest captured sample, confirm source rights, and choose a schedule before creating your monitor.

Portable recipe

Copy into the console's Import or share a recipe panel to customize fields, types and schedules. This configuration contains no captured records or workspace IDs.

{
  "schema": "sourcefinch/source@1",
  "name": "Current aviation weather observations",
  "url": "https://aviationweather.gov/data/cache/metars.cache.xml.gz",
  "recipe": {
    "mode": "http",
    "format": "xml",
    "items": "METAR",
    "fields": {
      "maxT_c": "maxT_c",
      "minT_c": "minT_c",
      "temp_c": "temp_c",
      "snow_in": "snow_in",
      "latitude": "latitude",
      "raw_text": "raw_text",
      "longitude": "longitude",
      "pcp3hr_in": "pcp3hr_in",
      "pcp6hr_in": "pcp6hr_in",
      "precip_in": "precip_in",
      "wx_string": "wx_string",
      "dewpoint_c": "dewpoint_c",
      "maxT24hr_c": "maxT24hr_c",
      "metar_type": "metar_type",
      "minT24hr_c": "minT24hr_c",
      "pcp24hr_in": "pcp24hr_in",
      "station_id": "station_id",
      "altim_in_hg": "altim_in_hg",
      "elevation_m": "elevation_m",
      "vert_vis_ft": "vert_vis_ft",
      "wind_gust_kt": "wind_gust_kt",
      "wind_speed_kt": "wind_speed_kt",
      "flight_category": "flight_category",
      "observation_time": "observation_time",
      "wind_dir_degrees": "wind_dir_degrees",
      "sea_level_pressure_mb": "sea_level_pressure_mb",
      "visibility_statute_mi": "visibility_statute_mi",
      "three_hr_pressure_tendency_mb": "three_hr_pressure_tendency_mb"
    },
    "required": [
      "station_id",
      "raw_text",
      "observation_time"
    ],
    "types": {
      "dewpoint_c": "number",
      "latitude": "number",
      "longitude": "number",
      "observation_time": "datetime",
      "temp_c": "number",
      "wind_gust_kt": "number",
      "wind_speed_kt": "number"
    }
  },
  "schedule": "hourly",
  "key_field": "station_id"
}

source.json

The request body used by the API, CLI and SDK examples.

{
  "name": "Current aviation weather observations",
  "url": "https://aviationweather.gov/data/cache/metars.cache.xml.gz",
  "recipe": {
    "mode": "http",
    "format": "xml",
    "items": "METAR",
    "fields": {
      "maxT_c": "maxT_c",
      "minT_c": "minT_c",
      "temp_c": "temp_c",
      "snow_in": "snow_in",
      "latitude": "latitude",
      "raw_text": "raw_text",
      "longitude": "longitude",
      "pcp3hr_in": "pcp3hr_in",
      "pcp6hr_in": "pcp6hr_in",
      "precip_in": "precip_in",
      "wx_string": "wx_string",
      "dewpoint_c": "dewpoint_c",
      "maxT24hr_c": "maxT24hr_c",
      "metar_type": "metar_type",
      "minT24hr_c": "minT24hr_c",
      "pcp24hr_in": "pcp24hr_in",
      "station_id": "station_id",
      "altim_in_hg": "altim_in_hg",
      "elevation_m": "elevation_m",
      "vert_vis_ft": "vert_vis_ft",
      "wind_gust_kt": "wind_gust_kt",
      "wind_speed_kt": "wind_speed_kt",
      "flight_category": "flight_category",
      "observation_time": "observation_time",
      "wind_dir_degrees": "wind_dir_degrees",
      "sea_level_pressure_mb": "sea_level_pressure_mb",
      "visibility_statute_mi": "visibility_statute_mi",
      "three_hr_pressure_tendency_mb": "three_hr_pressure_tendency_mb"
    },
    "required": [
      "station_id",
      "raw_text",
      "observation_time"
    ],
    "types": {
      "temp_c": "number",
      "latitude": "number",
      "longitude": "number",
      "dewpoint_c": "number",
      "wind_gust_kt": "number",
      "wind_speed_kt": "number",
      "observation_time": "datetime"
    }
  },
  "key_field": "station_id",
  "schedule": "hourly",
  "rights": true,
  "catalog": {
    "slug": "awc-current-metar-observations",
    "version_id": "5424106f-d725-4b96-b88e-728ca01e99b1"
  }
}

REST API

Create an API key under Console → API keys. Reference: /docs/api.

# the Verified entry (fields, recipe, sample, terms) as JSON
curl https://sourcefinch.com/v1/catalog/awc-current-metar-observations -H "Authorization: Bearer $SOURCEFINCH_API_KEY"

# create the monitor from source.json (below)
curl -X POST https://sourcefinch.com/v1/sources \
  -H "Authorization: Bearer $SOURCEFINCH_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $(uuidgen)" \
  -d @source.json

# then run it now (later runs follow the schedule)
curl -X POST https://sourcefinch.com/v1/sources/$SOURCE_ID/runs \
  -H "Authorization: Bearer $SOURCEFINCH_API_KEY" \
  -H "Idempotency-Key: $(uuidgen)"

CLI

The sourcefinch CLI is not on npm yet; see /docs/cli.

sourcefinch login
sourcefinch catalog get awc-current-metar-observations --source-json > source.json
sourcefinch sources create --file source.json
sourcefinch runs create $SOURCE_ID --wait
sourcefinch records $SOURCE_ID

TypeScript SDK

The SDK is not on npm yet; see /docs/sdk.

import { SourceFinch } from "@sourcefinch/sdk";

const sf = new SourceFinch({ apiKey: process.env.SOURCEFINCH_API_KEY });
const entry = await sf.catalog.get("awc-current-metar-observations");
const source = await sf.sources.create({
  catalog: { slug: entry.slug, version_id: entry.recipe.version_id },
  name: entry.name.slice(0, 100),
  url: entry.acquisition_path.endpoint,
  recipe: entry.recipe.definition,
  key_field: entry.recipe.key_field,
  schedule: entry.recipe.schedule,
  rights: true, // you confirm you have the right to collect this source
});
const run = await sf.runs.wait((await sf.runs.create(source.id)).id);
console.log(run.status);

MCP

Remote MCP server with OAuth; see /docs/mcp.

claude mcp add --transport http sourcefinch https://sourcefinch.com/mcp

# then ask your agent:
"Use SourceFinch to monitor Current aviation weather observations: get_catalog_source awc-current-metar-observations,
then create_source with its create_source_args (dry run first), then run_source."

Pricing

Each check is one run, whatever the number of records, and failed runs are free. On its default hourly schedule this source uses about 720 runs a month. It uses HTTP acquisition, so no browser runs are needed. See plans.

SourceFinch is independent and is not affiliated with or endorsed by NOAA / National Weather Service Aviation Weather Center. This page describes current aviation weather observations as SourceFinch acquires it.