Category · Domain data
Weather and climate data APIs for AI agents
APIs for current weather, forecasts, historical data and alerts, by coordinates. Compared on forecast range, historical depth, how often data updates, the terms of use and price per thousand calls.
Capability keys weather.current · weather.forecast · weather.historical · weather.alerts · weather.marine · All tools
letme.dev/weather.current picks the top-graded tool in this list and says how to call it direct; calling through letme comes later.
The same listing from the live API. Graded results come first, then the official MCP registry when no graded-only filter is set.
https://www.anchorterminal.com/api/v1/searchFilters
| Compare | # | Tool | Category | Grade | Score | Agent rating | p95 | Context | Price / x402 | Auth | Where | Details |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 151 | Google Weather API (Maps Platform)Google · HTTP API | Weather | B | 67 | 3.0 (2) | n/a | n/a | $0.15 / 1k req | API key | Hosted | ||
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Google Maps Platform's API for weather data. Top strength Covered by the Maps Platform SLA, 99.9 per cent with service credits Top weakness History is 24 hours only, and bulk data isn't available |
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| 162 | Pirate WeatherPirate Weather · HTTP API | Weather | B | 66.2 | 4.0 (2) | n/a | n/a | $2 / mo | API key | Hosted | ||
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Open-source weather API with Dark Sky-compatible responses, forecasts, alerts and historical data from public weather models. Top strength Named model sources and a documented priority order for every field Top weakness No SLA, and the terms call it best effort |
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| 169 | WeatherAPI.comWeatherAPI.com (Zoomash Ltd) · HTTP API | Weather | B | 65.8 | 3.5 (2) | n/a | n/a | $7 / mo | API key | Hosted | ||
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Weather API for current conditions, forecasts, history, marine data, alerts and air quality, queried by location. Top strength 3 million calls for $7 a month, and 100,000 a month free with no card Top weakness Key only in the query string, and no security.txt |
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| 203 | Open-MeteoOpen-Meteo · HTTP API | Data | B | 63.5 | 4.0 (2) | n/a | n/a | Freemium | None | Hosted | ||
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Open-source weather API over 30+ national and global weather models, with forecasts, historical reanalysis back to 1940 and no key for non-commercial use. Top strength No key or account for non-commercial use, at 600 calls a minute and 10,000 a day Top weakness Commercial prices appear only at Stripe checkout |
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| 251 | Visual Crossing Weather APIVisual Crossing · HTTP API | Weather | C | 60.3 | 4.0 (2) | n/a | n/a | $0.10 / 1k req | API key | Hosted | ||
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Weather API for historical conditions, forecasts and climate data by location and date range. Top strength History from 1970, current conditions and a 15-day forecast from one endpoint Top weakness Key only in the query string on the REST API |
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| 294 | OpenWeather One Call APIOpenWeather · HTTP API | Weather | C | 57.4 | 3.5 (2) | n/a | n/a | $1.50 / 1k req | API key | Hosted | ||
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Current weather, minute, hourly and daily forecasts, government alerts and history back to 1979 in one call, billed per call with 1,000 free a day. Top strength 1,000 free calls a day, then $0.0015 a call, or $0.001 on the agent lane Top weakness The main API takes the key only as the appid query parameter |
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| 364 | NOAA National Weather Service API (api.weather.gov)National Weather Service · HTTP API | Weather | D | 49.9 | 4.5 (2) | n/a | n/a | Free | None | Hosted | ||
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The US government's own forecast, alert and observation feed, free, keyless and public domain. Top strength Free, no key and no account, with public domain data Top weakness US and territories only |
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| 372 | AccuWeather Core Weather API + MCPAccuWeather · HTTP API | Weather | D | 48.8 | 2.5 (2) | n/a | n/a | $2 / mo | API key | Hosted | ||
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Weather API for current conditions, forecasts, alerts and radar imagery, with an official read-only MCP server. Top strength Official hosted MCP server, 26 read-only tools, same key as the REST API Top weakness Terms forbid using the data to train, validate or otherwise inform any AI system |
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| 399 | Met Office Weather DataHub (Site Specific)Met Office · HTTP API | Weather | E | 45.5 | 3.0 (2) | n/a | n/a | Freemium | API key | Hosted | ||
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The UK national weather service's point forecast API. Top strength Statutory UK weather service, with a FAQ licence to copy, publish and adapt the data Top weakness No OpenAPI, llms.txt, SDK or MCP server |
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Nothing matches these filters. .
p95 latency and context cost come from our probes, which haven't run yet, so those columns start hidden. Grades run from AA to F, and agent-ready means BB or better. Filters, sorting and export run in your browser; the table is complete without JavaScript.
Indexed, not reviewed (16)
Listings sorted into this category from public catalogues (the official MCP registry, APIs.guru, the x402 Bazaar and OpenRouter), with facts and our own checks but no score, grade or rank. How the index works.
| Listing | Kind | What it does | Why it's here |
|---|---|---|---|
| aboard untype.me | MCP server | Falsifiable claims about systemic problems: causal graph, forecasts, dossiers. | vendor's own |
| Agent Rynku - Warsaw Stock Exchange (GPW) data for your agent agentrynku.pl | MCP server | Warsaw Stock Exchange data: quotes, ESPI/EBI filings, quarterly KPIs, earnings forecasts. | vendor's own |
| APIVerve apiverve.com | MCP server | 350+ production-ready APIs through one MCP server — weather, geocoding, validation, financial data. | vendor's own |
| au-weather-mcp ausdata.io | MCP server | Query Australian weather + air quality — forecasts, current obs, 80yr archive (BOM). | vendor's own |
| Clarigrid clarigrid.energy | MCP server | Read-only electricity, gas, and weather data with structured provenance and units. | vendor's own |
| Crosby, TX Weather crosbynews.com | MCP server | Crosby, TX weather, air quality, tropics, floods, fishing, pollen, burn bans, radar, news & schools. | vendor's own |
| GoldBean MCP Server goldbean-api.xyz | MCP server | 49 pay-per-use APIs for AI agents via x402. AI, crypto, DeFi, blockchain, weather, search, security. | vendor's own |
| lp-copilot pulse.theaslangroupllc.com | MCP server | LP copilot: free position enumeration on 7 chains + paid range backtests, IL forecasts, points EV | vendor's own |
| Macroaxis Financial Data macroaxis.com | MCP server | Financial market, fundamental, valuation, risk, ownership, forecast, and portfolio tools. | vendor's own |
| mu micro.mu | MCP server | News, web search, mail, markets, weather, places, files, calendar, contacts. 67 tools, one endpoint. | vendor's own, widely used |
| Nausika nausika.app | MCP server | Mediterranean marine, nautical, sailing: forecasts, tides, sea routes, anchorages, POIs for AI. | vendor's own |
| ParseAPI parseapi.com | MCP server | Official ParseAPI MCP. Place, IP, email, phone, weather, currency lookups. | vendor's own |
| plantrip plantrip.io | MCP server | Travel planning: day-by-day itineraries, packing lists, weather insights, and trip cost estimates | vendor's own |
| RoboSystems robosystems.ai | MCP server | Accounting knowledge graphs: SEC XBRL filings, QuickBooks ledgers, reports and forecasts over MCP. | vendor's own |
| SnowSure — Snow & Ski snowsure.ai | MCP server | Live ski snow, multi-model forecasts, powder rankings & a grounded Answer Engine for 500+ resorts. | vendor's own |
| store yaktool.com | MCP server | Forecast a WooCommerce CSV import and migrate Shopify exports. 61 documented rules. | vendor's own |
How we test this category
The same locations queried for current conditions, a 10-day forecast and a year of history. We check what each returns, how often it updates, the licence terms and the cost per thousand calls. This test hasn't run yet, so Task success is pending and the grades here come from the categories assessed from public evidence.
How the ranking works
Every listing is scored 0 to 100 and given a grade from AA to F. In the October 2026 research run, 7 of the 9 weighted categories are scored from public evidence (status history, docs, pricing, terms, source and security pages) against a published checklist, with the reason and sources for every score on the listing. Performance and Task success wait for our probes and task suites, so their weight is shared across the rest until they run. Negative events deduct up to 15 points. Read the methodology.
For companies
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