API · /spaceweather-api

Space Weather API

healthy 4,230 Subscribers

Live solar and geomagnetic conditions as an API, relayed from NOAA's Space Weather Prediction Center (SWPC). Get the current planetary K-index with its activity level and geomagnetic-storm scale (Kp 5+ → G1-G5); the real-time solar wind from the L1 point (speed, density, temperature, magnetic field Bz/Bt); the current NOAA scales for radio blackouts (R), solar-radiation storms (S) and geomagnetic storms (G); and the latest space-weather alerts, watches and warnings. Ideal for aurora forecasting, satellite & power-grid operations, HF-radio and amateur-radio apps, and science dashboards.

api.oanor.com/spaceweather-api
Get an API key Try in playground → Contact provider

Machine-readable spec so AI agents can integrate this API.

/api/spaceweather-api/openapi.json
/api/spaceweather-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
141 ms
Server probes · 24h
Subscribers
4,230
active
Total calls
130
last 7 days
status Full status page → · 15 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 3,000 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 3,000 calls/month
  • 2 req/sec
  • Kp + solar wind + scales
  • No credit card
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Starter

€6.00 /month

  • 50,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 50k calls/month
  • 8 req/sec
  • Alerts & history
  • Email support
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Pro

€17.00 /month

  • 240,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 240k calls/month
  • 20 req/sec
  • Aurora / grid ops
  • Priority support
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Mega

€44.00 /month

  • 1,200,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 1.2M calls/month
  • 50 req/sec
  • Science platform
  • Dedicated SLA
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Built by

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Live on-chain data for Aurora — an EVM running on the NEAR Protocol — via its public Blockscout explorer (no wallet, no key). The stats endpoint returns chain-wide totals (blocks, transactions, addresses, average block time, gas used); gas gives the current gas-price oracle (slow/average/fast). Blocks lists the latest blocks, and a single block resolves by height or by hash with its transaction count, gas, miner and timestamp. The address endpoint returns any account's ETH balance, nonce, contract flag and token holdings; transaction resolves a tx by hash with its from/to, value in ETH, fee, status and block. The token endpoint returns an ERC-20 token's metadata (name, symbol, decimals, total supply, holders) by contract address, and search runs a universal lookup across addresses, tokens, blocks and transactions. Gas, balances, values and fees are denominated in ETH, the native coin. Real on-chain data straight from the explorer, refreshed every call — no key. 9 endpoints. For multi-chain coverage combine with the other oanor chain APIs (Ethereum, Base, Arbitrum and more).

api.oanor.com/aurora-api

Marine Buoys API

Live marine weather and ocean conditions from NOAA's National Data Buoy Center (NDBC). The station catalogue (1,930 moored buoys and coastal stations worldwide) is searchable by name, type or coordinate; the live endpoint returns the latest observation for any station: significant wave height, wave period and direction, water and air temperature, wind speed/gust/direction, atmospheric pressure and more. Find the nearest buoys to any lat/lon. Ideal for surfing & sailing apps, marine operations, coastal monitoring and oceanography.

api.oanor.com/buoys-api

METAR / TAF Aviation Weather API

Live aviation weather for any airport as an API, relayed from NOAA's Aviation Weather Center. Get the current METAR observation for an ICAO station (e.g. KJFK → New York JFK: temperature, dewpoint, wind, visibility, altimeter, cloud layers, flight category VFR/MVFR/IFR/LIFR and the raw report) or the TAF terminal aerodrome forecast. Query one station or up to 10 at once (KJFK,EGLL,EDDF). Both decoded fields and the raw text are returned. Ideal for flight-planning tools, aviation dashboards, drone/UAV operations and weather apps.

api.oanor.com/metar-api

Tides API

High and low tide predictions for thousands of US coastal stations, powered by NOAA CO-OPS. Search the station directory by state or name, pull full station metadata (coordinates and time zone), and get tide predictions as high/low events or an hourly height series for up to seven days, in feet or metres and against the datum of your choice (MLLW, MSL, MHHW and more). Delivered through a fast, reliable API with clear errors for invalid stations. Ideal for boating and sailing, fishing and surfing, ports and logistics, beach and tourism services and coastal planning.

api.oanor.com/tides-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Space Weather API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Space Weather API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Space Weather API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Space Weather API cost?
Space Weather API has a free tier with 100 calls / month. Paid plans start at €6.00 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Space Weather API GDPR-compliant?
All requests to Space Weather API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/spaceweather-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/spaceweather-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/spaceweather-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/spaceweather-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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