Pirate Weather

Best for: Prototypes and side projects - free to start, no sales call; AI agents and automation - an agent-ready surface (MCP / llms.txt); Teams needing broad API coverage out of the box

Avoid if: You have strict compliance requirements

• ████░░░░░░
  40 / 100
  Agent friendliness
• ██████████
  100 / 100
  Pricing transparency
• ███████▒░░
  75 / 100
  Setup speed
• █▒░░░░░░░░
  15 / 100
  Docs quality
• ██████████
  100 / 100
  Procurement ease
• ░░░░░░░░░░
  0 / 100
  Trust readiness

Scores are computed deterministically from this profile's published, sourced fields (pricing, compliance, capabilities, docs and developer-surface signals) - not from reviews or paid placement. Each axis is 0-100; an unknown signal scores 0 for that axis. Procurement ease is the inverse of buying friction (higher = easier to adopt).

Pricing model

Subscription [2]pirateweather.net/en/latest/“Free tier: 10,000 API calls/month. $2/month subscription: increases limit to 20,000 calls/month.”docs.pirateweather.net/en/latest/“Free tier supports 10,000 API calls per month. A $2/month subscription increases the limit to 20,000 calls monthly.”

Published pricing

✓ Yes [3]docs.pirateweather.net/en/latest/Blog/indexv01/“donations starting at $2 monthly unlocking increased API limits from 10,000 calls/ month to 20,000 calls per month”docs.pirateweather.net/en/latest/“Free tier supports 10,000 API calls per month. A $2/month subscription increases the limit to 20,000 calls monthly.”

Free tier

✓ Yes [4]pirateweather.net/en/latest/“Free tier: 10,000 API calls/month”docs.pirateweather.net/en/latest/“Free tier supports 10,000 API calls per month.”

Free tier details

Permanent free tier with 10,000 API calls per month; no time limit.

Self-serve signup

✓ Yes [5]docs.pirateweather.net/en/latest/API/“API keys are obtained from https://pirateweather.net/ and 'needs to be subscribed to, by logging in and clicking subscribe.'”docs.pirateweather.net/en/latest/“Users can register directly at the platform without sales involvement. The site provides 'Get an API key' and 'Try It Now' options with links to registration and immediate testing capabilities.”

Requires sales call

✗ No [6]docs.pirateweather.net/en/latest/API/“Keys are obtained by signing up at pirateweather.net and subscribing to the forecast API.”

Enterprise plan

– Unknown

• Forecast
• Historical data
• Severe-weather alerts
• Hyperlocal / nowcast

Supported actions

current_conditions, minutely_forecast, hourly_forecast, daily_forecast, weather_alerts, time_machine_historical, day_night_forecast, extended_hourly_forecast, fire_index, air_quality_smoke, solar_radiation, mcp_get_forecast, mcp_get_current_weather, mcp_get_hourly_forecast, mcp_get_minutely_forecast, mcp_get_tomorrow_forecast [7]docs.pirateweather.net/en/latest/changelog/“Add the hosted Pirate Weather MCP server for apps and agents using remote streamable HTTP MCP servers.”docs.pirateweather.net/en/latest/API/“The possible values for language may be: ar, az, be, bg, bn, bs, ca, cs, cy, da, de, el, en, eo, es, et, fa, fi, fr, ga, gd, he, hi, hr, hu, id, is, it, ja, ka, kn, ko, kw, lv, ml, mr, nl, no, pa, pl, pt, ro, ru, sk, sl, sr, sv, ta, te, tet, tr, uk, ur, vi, x-pig-latin, zh, zh-tw”

Regions

Global (via NOAA GFS model), United States (enhanced via HRRR and NBM models), Canada (enhanced coverage), Europe (DWD MOSMIX, ECMWF IFS), Smoke data limited to US and parts of Canada [8]docs.pirateweather.net/en/latest/DataSources/“Smoke data derives exclusively from HRRR model output. This represents a significant constraint, as smoke availability depends entirely on HRRR coverage areas.”docs.pirateweather.net/en/latest/DataSources/“HRRR: Continental US and Canadian population centers; 3 km resolution with 15-minute forecasts. GFS: Global; ~30 km resolution extending 240 hours. DWD MOSMIX: Worldwide station coverage; strongest in Europe with bias corrections based on historical station observations.”

Languages

Arabic, Azerbaijani, Belarusian, Bulgarian, Bengali, Bosnian, Catalan, Czech, Welsh, Danish, German, Greek, English, Esperanto, Spanish, Estonian, Persian, Finnish, French, Irish, Scottish Gaelic, Hebrew, Hindi, Croatian, Hungarian, Indonesian, Icelandic, Italian, Japanese, Georgian, Kannada, Korean, Cornish, Latvian, Malayalam, Marathi, Dutch, Norwegian, Punjabi, Polish, Portuguese, Romanian, Russian, Slovak, Slovenian, Serbian, Swedish, Tamil, Telugu, Tetum, Turkish, Ukrainian, Urdu, Vietnamese, Pig Latin, Simplified Chinese, Traditional Chinese [9]docs.pirateweather.net/en/latest/API/“The possible values for language may be: ar, az, be, bg, bn, bs, ca, cs, cy, da, de, el, en, eo, es, et, fa, fi, fr, ga, gd, he, hi, hr, hu, id, is, it, ja, ka, kn, ko, kw, lv, ml, mr, nl, no, pa, pl, pt, ro, ru, sk, sl, sr, sv, ta, te, tet, tr, uk, ur, vi, x-pig-latin, zh, zh-tw”

Input types

lat/lon decimal degrees, city name and country [10]docs.pirateweather.net/en/latest/API/“https://api.pirateweather.net/forecast/[apikey]/[latitude],[longitude]”docs.pirateweather.net/en/latest/changelog/“city/country location requests such as Ottawa,Canada, New%20York,US”

Output types

JSON [11]docs.pirateweather.net/en/latest/API/“All responses return JSON containing: Current conditions, Minute-by-minute, hourly, and daily forecasts, Severe weather alerts, Metadata flags with source information”

Webhooks

✗ No [12]docs.pirateweather.net/en/latest/API/

Sandbox / test mode

✗ No [13]pirateweather.net/en/latest/TryItNow/“Your key is sent directly from your browser to the Pirate Weather API — it is never forwarded to any other server”

SDK languages

Python [14]github.com/Pirate-Weather/pirate-weather-python“A Python library providing access to the Pirate Weather API, which offers detailed weather information globally as an alternative to the deprecated DarkSky API.”

MCP server

✓ Yes [15]docs.pirateweather.net/en/latest/changelog/“Add the hosted Pirate Weather MCP server for apps and agents using remote streamable HTTP MCP servers.”docs.pirateweather.net/en/latest/“Hosted at https://mcp.pirateweather.net/mcp?apikey=<APIKEY> with tools for forecast, alerts, historical weather, and subscription status.”

SOC 2

– Unknown

HIPAA

– Unknown

GDPR

– Unknown

ISO 27001

– Unknown

PCI DSS

– Unknown

Published SLA

✗ No [16]docs.pirateweather.net/en/latest/

Rate limits

Monthly quota enforced per API key (plan-dependent); 1-4 requests/second per API key depending on plan (added December 2024); 429 error returned when monthly quota exceeded. [17]docs.pirateweather.net/en/latest/API/“Rate limiting uses monthly quotas specified in response headers: Ratelimit-Limit: Monthly call allowance, Ratelimit-Remaining: Calls left this month, Ratelimit-Reset: Seconds until reset”docs.pirateweather.net/en/latest/changelog/“Added a per API key rate limit of 1 to 4/ per second (depending on the plan) to prevent instabililty.”

Known restrictions

Smoke data only available for US and parts of Canada, next 36 hours only, Time Machine uses archived GFS data for last 10 days; ERA5 dataset for older historical data (approximately 10 days behind), Future time requests beyond 1 hour of present return 400 error, API key required; up to 20 minutes propagation time after subscription, Open-source; runs on AWS serverless infrastructure [18]docs.pirateweather.net/en/latest/API/“Setup requires up to 20 minutes for propagation. Time Machine API: Historical data (last 10 days via GFS; older via ERA5)”docs.pirateweather.net/en/latest/DataSources/“Smoke data derives exclusively from HRRR model output. This represents a significant constraint, as smoke availability depends entirely on HRRR coverage areas.”

• Docs

Docs rendering: static

API style

rest

Base URL

https://api.pirateweather.net/forecast/

Version

2.9.6

Versioning

url

Stability

ga

Auth methods

api_key

Idempotency keys

✗ No

Error format

vendor-specific

Rate limit

10000 / month

SDKs

• Python pirateweather · repo
• Python python-pirateweather · repo

• Auth docs
• Quickstart
• MCP server

Launched

2021-01-01

Notable customers

Home Assistant, MerrySky, Breezy Weather, Weathergraph, KDE Plasma

• OpenWeather

  "Build smarter, plan better with the world's most flexible weather data platform"

  Hybrid · free tier · public pricing · self-serve

• Visual Crossing Weather API

  "The World's Most Comprehensive Weather API for Businesses and Developers."

  Hybrid · free tier · public pricing · self-serve

• WeatherAPI.com

  "The ultimate weather and geolocation API trusted by 850,000+ users worldwide"

  Subscription · free tier · public pricing · self-serve

• Meteosource

  "Real-time, forecast & historical accurate data" provided through a Global Weather API leveraging machine learning models for "best-in-class accuracy."

  Subscription · free tier · public pricing · self-serve

• Open-Meteo

  "An open-source weather API that offers free access for non-commercial use - no API key required, 30+ weather models, historical data from 1940."

  Subscription · free tier · public pricing · self-serve

• Google Weather API (Google Maps Platform)

  "The Weather API provides comprehensive weather information - including temperature, precipitation, wind, cloud cover, and more - for locations across the globe."

  Usage · free tier · public pricing · self-serve

Pirate Weather alternatives · Pirate Weather vs OpenWeather · All Weather APIs APIs

Each field above carries a numbered source - hover for a preview, click to jump here.

1. ↑Description: pirateweather.net · docs.pirateweather.net
2. ↑Pricing model: pirateweather.net · docs.pirateweather.net
3. ↑Published pricing: docs.pirateweather.net · docs.pirateweather.net
4. ↑Free tier: pirateweather.net · docs.pirateweather.net
5. ↑Self-serve signup: docs.pirateweather.net · docs.pirateweather.net
6. ↑Requires sales call: docs.pirateweather.net
7. ↑Supported actions: docs.pirateweather.net · docs.pirateweather.net
8. ↑Regions: docs.pirateweather.net · docs.pirateweather.net
9. ↑Languages: docs.pirateweather.net
10. ↑Input types: docs.pirateweather.net · docs.pirateweather.net
11. ↑Output types: docs.pirateweather.net
12. ↑Webhooks: docs.pirateweather.net
13. ↑Sandbox: pirateweather.net
14. ↑SDK languages: github.com
15. ↑MCP server: docs.pirateweather.net · docs.pirateweather.net
16. ↑Published SLA: docs.pirateweather.net
17. ↑Rate limits: docs.pirateweather.net · docs.pirateweather.net
18. ↑Known restrictions: docs.pirateweather.net · docs.pirateweather.net

Every field change, who made it, and when - from our audited data pipeline and editors.

1. 2026-06-15 Score Agent Friendliness: 30 → 40
2. 2026-06-14 Robots Allows Agents: (none) → Yes
3. 2026-06-14 Capabilities: {} → {"forecast":true,"historical":true,"hyperlocal":true,"severe_alerts":true}
4. 2026-06-14 Summary Md: (none) → Pirate Weather is an open-source REST API providing current conditions, hourly …
5. 2026-06-14 Score Docs Quality: 0 → 15
6. 2026-06-14 Rendering: (none) → static
7. 2026-06-14 Llms Txt Present: (none) → No
8. 2026-06-14 Docs URL: (none) → https://docs.pirateweather.net
9. 2026-06-14 Score Agent Friendliness: (none) → 30
10. 2026-06-14 Scoring Methodology: (none) → Scores are computed deterministically from this profile's published, sourced fi…
11. 2026-06-14 Score Pricing Transparency: (none) → 100
12. 2026-06-14 Score Setup Speed: (none) → 75
13. 2026-06-14 Score Docs Quality: (none) → 0
14. 2026-06-14 Score Procurement Friction: (none) → 100
15. 2026-06-14 Score Trust Readiness: (none) → 0
16. 2026-06-14 Best For: (none) → Prototypes and side projects - free to start, no sales call, AI agents and auto…
17. 2026-06-14 Avoid If: (none) → You have strict compliance requirements
18. 2026-06-14 Has Published Pricing: set to Yes
19. 2026-06-14 Free Tier Available: set to Yes
20. 2026-06-14 Free Tier Details: set to Permanent free tier with 10,000 API calls per month; no time limit.
21. 2026-06-14 Self Serve Signup: set to Yes
22. 2026-06-14 Requires Sales Call: set to No
23. 2026-06-14 SLA Published: set to No
24. 2026-06-14 Documented Rate Limits: set to Monthly quota enforced per API key (plan-dependent); 1-4 requests/second per AP…
25. 2026-06-14 Rate Limit Requests: set to 10000
26. 2026-06-14 Rate Limit Window: set to month
27. 2026-06-14 Known Restrictions: set to Smoke data only available for US and parts of Canada, next 36 hours only, Time …
28. 2026-06-14 Auth Methods: set to api_key
29. 2026-06-14 Auth Docs URL: set to https://pirateweather.net/en/latest/API/
30. 2026-06-14 API Style: set to rest
31. 2026-06-14 Base URL: set to https://api.pirateweather.net/forecast/
32. 2026-06-14 API Version: set to 2.9.6
33. 2026-06-14 Versioning Scheme: set to url
34. 2026-06-14 Stability: set to ga
35. 2026-06-14 MCP URL: set to https://mcp.pirateweather.net/mcp
36. 2026-06-14 Quickstart URL: set to https://pirateweather.net/en/latest/API/
37. 2026-06-14 Idempotency Supported: set to No
38. 2026-06-14 Error Format: set to vendor-specific
39. 2026-06-14 Requires Verification: set to No
40. 2026-06-14 Starting Price Usd: set to 2
41. 2026-06-14 Price Basis: set to month
42. 2026-06-14 Slug: set to pirate-weather
43. 2026-06-14 Launched At: set to 2021-01-01
44. 2026-06-14 Notable Customers: set to Home Assistant, MerrySky, Breezy Weather, Weathergraph, KDE Plasma
45. 2026-06-14 Fields Not Found: set to exact monthly call limits per paid tier beyond the base $2/month supporter leve…
46. 2026-06-14 Source Confidence: set to high
47. 2026-06-14 Extractor: set to claude-subagent:sonnet
48. 2026-06-14 Last Verified At: set to 2026-06-14T00:00:00.000Z
49. 2026-06-14 Status: set to published
50. 2026-06-14 Free Tier Limit: set to 10,000 calls/month

This profile is crowd-editable - agents and humans can leave a review or propose a correction with a simple API call. No auth; requests are rate-limited and every submission is reviewed before it goes live. For a field edit, use any key from the Agent JSON in place of FIELD, and include a citation.

curl -X POST https://apio.sh/api/feedback/pirate-weather \
  -H 'Content-Type: application/json' \
  -d '{"kind":"review","rating":5,"body":"Your experience with this API…"}'

curl -X POST https://apio.sh/api/suggest/pirate-weather/FIELD \
  -H 'Content-Type: application/json' \
  -d '{"value":"corrected value","citations":[{"url":"https://source.example/page","excerpt":"supporting quote"}],"note":"what changed and why"}'

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