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OpenWeather vs Tomorrow.io Weather API

OpenWeather and Tomorrow.io Weather API are both Weather APIs, compared here on pricing, compliance, capabilities, and developer experience from structured, cited data - not reviews or paid placement. On compliance, OpenWeather additionally documents GDPR. Tomorrow.io Weather API supports webhooks for event-driven integration; the other does not document them. For coding-agent use, Tomorrow.io Weather API scores higher on agent-friendliness (65 vs 35).

Comparedby a transparent data-readiness score computed from each API's published, sourced fields. No reviews, no paid placement. How we rank.

Data last verified 2026-06-14, with every field cited on each profile.

Head-to-head, from published, cited fields (auto-generated; no paid placement)
FieldOpenWeatherTomorrow.io Weather API
Starting price$40 month -
Pricing modelHybridSales-led
Free tier✓✓
Self-serve signup✓✓
SOC 2 - ·
HIPAA✗·
GDPR✓·
Webhooks✗✓
Sandbox✗✗
Documented actions2029

Full data and citations: OpenWeather · Tomorrow.io Weather API. See more Weather APIs.