Weather and air quality APIs for AI agents
Weather data APIs give an agent current conditions, a forecast or an air quality reading for a place, one paid call at a time. This page keeps Data and Tools listings that mention weather, a weather forecast, air quality, precipitation or climate data, or whose name says weather or climate. Some are dedicated weather services, some are larger data bundles where weather is one route among many, and one is built for prediction market agents that need a station-exact temperature. The bare words forecast and temperature are not used, because they match financial forecasts and unit converters. The agent discovers the listing for free in the PayAPI Market catalogue and pays the provider over x402 in USDC on Base, Solana or Algorand. No API key. Settlement-verified means a paid route with an on-chain receipt, and the examples are claimed listings that have one. Unclaimed (bazaar) imports are labelled and come after them. Listing is free and providers keep 100% of every settled call.
31 APIs and 738 endpoints match this page. 19 are settlement-verified: a paid route with an on-chain receipt.
Settlement-verified examples
- UK Data API · $0.001 to $0.002 · settlement-verified · On-chain receipt
24 UK data endpoints: Land Registry sold prices, rental yields, stamp duty, EPC, crime, flood risk, planning, council tax, weather, air quality, Companies House, DVLA, MOT, BoE rates, exchange rates, inflation, mortgage calculator. All paid per-request via x402. - LibertiAnt Market Data API · $0.001 · settlement-verified · On-chain receipt
Live crypto, gold, FX and weather data with 1h technical analysis (RSI/MA/trend). Pay-per-call in USDC on Base via x402. No API keys. Endpoints, $0.001 each: GET /x402/crypto (live crypto price + 1h RSI/MA/trend), GET /x402/weather (live weather by city), GET /x402/metal (live gold/silver price, PAXG-based), GET /x402/forex (live FX rates, USD/EUR etc.). - Fitze Multi-Source Data Tools · $0.002 to $0.03 · settlement-verified · On-chain receipt
13 pay-per-call data endpoints for agents: web page fetch and text extraction, domain/IP intelligence (WHOIS, DNS, SSL), GitHub repo metadata, ERC-20 token intel on Base, deep repo due-diligence, web research brief, USGS earthquake feed, Open-Meteo weather, live fiat FX rates, SEC EDGAR full-text search, FDA recall reports, stock quote, plus a free URL liveness check. No API key, no account. x402 v2, USDC on Base, settles straight to the provider wallet. The submitted route (USGS earthquakes) answers with real data even with no parameters, so an agent can probe and pay without guessing a schema. - Agent Data Tools · $0.002 to $0.2 · settlement-verified · On-chain receipt
176 pay-per-call tools for AI agents at one origin, most at $0.003: counterparty and OFAC sanctions checks for wallets, token prices and wallet portfolios, chain reads on Base, Ethereum, Arbitrum, Optimism and Polygon (balances, token transfers, logs, gas, receipts), web page and PDF to Markdown, company and domain checks, FX, weather and time, and OpenAI-compatible chat and embeddings. x402 v1/v2 on 5 networks and MPP; failed calls are never charged. - AirScout · $0.01 · settlement-verified · On-chain receipt
US air quality for agents: current AQI and pollutants for any US location, an exercise verdict, and the cleanest window in the next 7 days. Free preview, signed receipt on every paid call. - Current weather plus air quality for Chinese cities, with Chinese-language · $0.02 · settlement-verified · On-chain receipt
Current weather plus air quality for Chinese cities, with Chinese-language conditions. Pass ?city=上海 (14 city presets) or ?lat=&lon=. Returns temperature, feels-like, humidity, precipitation, wind, WMO weather text in Chinese, and PM2.5/PM10/US AQI with a Chinese pollution level. No API key and no signup: call the endpoint, it answers HTTP 402 with the payment terms, pay per request in USDC on Base with any x402-compatible client or wallet, then retry the same request to get the data. - Money Reactor Weather Anywhere · $0.002 · settlement-verified · On-chain receipt
Current weather for any city worldwide: temperature, conditions, wind, humidity. Simple city parameter, clean JSON, no API key. Useful for travel, logistics and daily-briefing agents. - Travel Planning & Trip Intelligence · $0.01 to $0.25 · settlement-verified · On-chain receipt
Travel-decision intelligence for AI agents. Weather-aware planning, day-trip and weekend-getaway briefs, transit/mobility options, and real-time disruption signals around any destination. Pay-per-call - Weather for prediction-market agents · $0.01 · settlement-verified · On-chain receipt
Station-exact temperature for Kalshi daily high/low and Polymarket city temperature markets: /forecast (0.02 USDC) NWS+MET Norway consensus/spread; /observed /settlement /market-station (0.01). USDC on Base via x402; errors never charged. Data: NWS/NOAA public domain, MET Norway CC BY 4.0. - x402-toolbox — 333 deterministic agent utility APIs · $0.002 · settlement-verified · On-chain receipt
333 keyless utility endpoints for AI agents: EVM chain reads, DNS/WHOIS, email validation, hash/encoding, VIN/barcode decode, weather, finance. One-line JSON, $0.002/call.
Unclaimed (bazaar) imports
These rows were imported and the provider has not claimed them. They are not the examples above.
- Current conditions plus hourly and daily forecasts for anywhere on Earth · $0.005 · settlement-verified · Unclaimed (bazaar)
Current conditions plus hourly and daily forecasts for anywhere on Earth. Pass a major city name or lat/lon coordinates; get temperature, wind, humidity, pressure, cloud cover, condition codes and precipitation, with up to 90 hourly and 10 daily entries. Data from MET Norway (CC BY 4.0). No API keys, one call. POST a JSON body like: {"city":"paris","hourly":12,"days":3} - Fetches 7-day temperature and precipitation forecast charts from Open-Meteo · $0.01 · settlement-verified · Unclaimed (bazaar)
Fetches 7-day temperature and precipitation forecast charts from Open-Meteo. - Forward geocode a free-text address, place name, or city (e · $0.001 · settlement-verified · Unclaimed (bazaar)
Forward geocode a free-text address, place name, or city (e.g. "Tokyo, Japan") into geographic coordinates — latitude and longitude — plus its IANA timezone. Use this to convert a location description into coordinates for mapping, distance, or timezone-aware lookups, or as the first step before coordinate-based endpoints like weather forecasts. - Live current weather conditions for any city, sourced from Open-Meteo · $0.01 · settlement-verified · Unclaimed (bazaar)
Live current weather conditions for any city, sourced from Open-Meteo - Official U · $0.01 · settlement-verified · Unclaimed (bazaar)
Official U.S. National Weather Service (NWS) forecast for the next period — the nearest upcoming forecast window, e.g. today, tonight, or tomorrow — at a given latitude/longitude. US locations only. Use /geo/lookup first if you only have an address. - Queries current temperature, wind speed, and weather codes from the public… · $0.01 · settlement-verified · Unclaimed (bazaar)
Queries current temperature, wind speed, and weather codes from the public Open-Meteo API. Queries current temperature, wind speed, and weather codes from the public Open-Meteo API. - Space-weather alerts — newest bounded NOAA SWPC geomagnetic and solar-flare… · $0.005 · settlement-verified · Unclaimed (bazaar)
Space-weather alerts — newest bounded NOAA SWPC geomagnetic and solar-flare messages with deterministic product-code kinds, complete-message digests, and freshness. Space-weather alerts — newest bounded NOAA SWPC geomagnetic and solar-flare messages with deterministic product-code kinds, complete-message digests, and freshness. - Space-weather forecast — normalized one-to-three-day NOAA SWPC geomagnetic… · $0.005 · settlement-verified · Unclaimed (bazaar)
Space-weather forecast — normalized one-to-three-day NOAA SWPC geomagnetic Kp-index periods labeled observed, estimated, or predicted. Space-weather forecast — normalized one-to-three-day NOAA SWPC geomagnetic Kp-index periods labeled observed, estimated, or predicted. - Weather forecast for a location (global, keyless): current conditions, an hou... · $0.002 · settlement-verified · Unclaimed (bazaar)
Weather forecast for a location (global, keyless): current conditions, an hourly series (up to 48h) and a daily summary (up to 10 days: min/max temp + condition), from met.no. Pass lat+lon, or a place name. For travel, logistics, events, energy. No API key. - AI Lab Machine Rack · $0.01 · Unclaimed (bazaar)
Global weather forecast data for arbitrary named locations or direct coordinates. Credit: 402 Index (MIT) - Datakoot x402 data API · $0.01 · Unclaimed (bazaar)
48 live public-data tools (security, packages, SEC filings, economy, FX, weather, domains, Federal Register, Base) plus 4 Koot briefing tools that combine many lookups into one answer, for AI agents. $0.01 USDC per call (every tool and every Koot brief) on Base via x402, charged only on success. The same tools are free for 100 calls/day via MCP at <server>.datakoot.com/mcp. Data: x402-list.com (CC BY 4.0) - GISGP x402 Hazard API · $0.2 · Unclaimed (bazaar)
Multi-source US property hazard indicator (USGS seismic risk, FEMA 10-year disaster history, NOAA active weather alerts). Data: x402-list.com (CC BY 4.0)
Related pages
Questions
Do these APIs cover the whole world?
Some do, and some focus on one country, such as US air quality or Chinese cities. Bundled data listings often include weather for anywhere. The listing description says which.
Is the weather route the one that was verified?
Not always. On a bundle listing, the settlement-verified route may be a different endpoint. Settlement-verified means a paid route with an on-chain receipt, and the listing page names the route.
How does an agent pay for a forecast?
It calls the provider, receives HTTP 402 with the price, and pays in USDC on Base, Solana or Algorand over x402. There is no API key and no monthly plan.