# Climacell

**Canonical:** https://apis.io/providers/climacell/  
**Website:** https://www.tomorrow.io  
**APIs profiled:** 0

Climacell (styled ClimaCell) was a Boston-based weather-intelligence startup that pioneered a "Weather of Things" approach — deriving hyperlocal precipitation and atmospheric conditions from wireless-signal attenuation, connected devices, and its own proprietary numerical weather model — and exposed it through a developer-facing REST weather API. Backed by Canaan Partners among others, the company rebranded to Tomorrow.io in 2020 and its legacy climacell.co domain now 301-redirects to www.tomorrow.io. The surviving product is the Tomorrow.io v4 Weather API, which supersedes the original ClimaCell v3 API and exposes 60+ hyperlocal data layers (core weather, air quality, pollen, fire, flood, lightning, maritime, aviation, road) with realtime, forecast, historical, map-tile, and webhook-alert access. This profile is the historical ClimaCell identity; the enriched, live provider record lives in the api-evangelist tomorrow-io repository.

## Kin Score — 22.9 / 100 (emerging)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 22.9).

| Facet | Score |
|---|---|
| Discoverability | 50.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 41.3 |
| Commercial Clarity | 44.7 |

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

- **Climacell Domain Security** — TLSv1.3 · DMARC

## Tags

Weather, Forecast, Climate, Weather Intelligence, Air Quality, Precipitation, Weather of Things, Geospatial, Risk, Alerts

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/climacell/). Scores are computed from the provider's own public artifacts under a published rubric.