open-signals

What's in it

Data offered docs-verified

river discharge and gage height (USGS gauges) · water levels at CO-OPS stations (LWD on Great Lakes, MLLW on tidal stations) · river stage and flood category, observed and forecast (NOAA NWPS) · earthquakes (USGS, EMSC) · volcano alert levels (USGS) and eruptions (Smithsonian GVP) · Great Lakes ice cover · daily weather (Open-Meteo) · river discharge forecasts (GloFAS via Open-Meteo) · air quality (CAMS via Open-Meteo) · EPA-regulated facility compliance and TRI releases · power-plant CO2, SO2 and NOx (EPA CAMPD) · wildfire burn perimeters, public-land share by county, federal campgrounds, fire-weather stations (static GeoJSON) · FEMA disaster declarations · tropical cyclone best-track fixes (IBTrACS) · crop progress and condition (USDA NASS) · catalogue of public data sources and layers as GeoJSON

Coverage llm-inferred

Mixed: several fetchers are worldwide (e.g. earthquakes, weather, volcanoes) while many are US-only; per source · Varies by source: e.g. daily weather 92 days back and 7 forward; wildfire perimeters for the last 20 years; volcano eruptions since 1900

Update frequency docs-verified

Varies by source: live fetch for most, weekly for USDA crop progress and barge tonnage, latest month for BTS border crossings and EPA CAMPD; cached 2 minutes to 6 hours

Formats docs-verified

JSON · GeoJSON · MCP streamable HTTP · REST with OpenAPI description · CESMII i3X 1.0 · CLI

Access docs-verified

Free and open: public instance at open-signals.civops.io needs no key for most sources and is rate-limited per IP; code is Apache-2.0; data keeps each source's licence (public_domain, open, non_commercial, restricted, unknown). NASS_API_KEY free; EBIRD_API_KEY free, non-commercial. Public i3X read token os-public-read.