Head to head
OpenWeather vs Tomorrow.io
As a weather API, OpenWeather rates higher on the APIbenchmarks Index, 84.6 to 82.6, a 2-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | OpenWeather | Tomorrow.io |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 84.6 | 82.6 |
Specifications
| OpenWeather | Tomorrow.io | |
|---|---|---|
| Best for | Ubiquitous developer weather API | Enterprise weather intelligence |
| Free tier | 1M calls/mo (classic) + 1k One Call calls/day | Free plan (rate-limited daily/hourly/per-sec) |
| Pricing | Per call / freemium tiers | Per API call / tiered |
| Official SDKs | 5 languages | 8 languages |
Is OpenWeather better than Tomorrow.io?
On the APIbenchmarks Index, OpenWeather rates higher (84.6 vs 82.6). It leads on the four weighted criteria, but price is reported separately, so the best choice still depends on your budget.
Verdict in one line
OpenWeather leads by 2 points (84.6 vs 82.6) and wins 2 of 4 criteria; Tomorrow.io wins 2.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 80 | 88 | |
| Reliability | 82 | 85 | |
| Ecosystem & SDKs | 90 | 74 | |
| Accessibility | 88 | 82 |
Choose OpenWeather if… / choose Tomorrow.io if…
- →ecosystem & sdks matters most to you (90 vs 74)
- →accessibility matters most to you (88 vs 82)
- →your use case matches its focus: ubiquitous developer weather api
- →documentation & dx matters most to you (88 vs 80)
- →reliability matters most to you (85 vs 82)
- →you need broad SDK coverage (8 official SDKs vs 5)
- →your use case matches its focus: enterprise weather intelligence
Pricing side by side
- Model
- Per call / freemium tiers
- Free tier
- 1M calls/mo (classic) + 1k One Call calls/day
- Free$0
- One Call API 3.0 (pay as you call)1,000 calls/day free, then ~0.0012 GBP (~$0.0015) per call
- Startup~$40/month
- Developer~$180/month
- Professional~$470/month
- Enterprisefrom $3,000/month
- Model
- Per API call / tiered
- Free tier
- Free plan (rate-limited daily/hourly/per-sec)
- Free API Plan$0
- API Plan (paid)Usage-based / contact sales
- Platform PlanContact sales
Vendor-published pricing, verified 2026-06-27 (OpenWeather) and 2026-06-27 (Tomorrow.io).
SDK and language coverage
Both · 2
Python (PyOWM, community)JavaScript / Node.js (community wrappers)
Only OpenWeather · 3
REST/JSON (HTTP, language-agnostic)Java / Android (OWM JAPIs, community)Curated community library list (awesome-openweather)
Only Tomorrow.io · 6
REST API (HTTP)Java (code samples)Go (code samples)R (code samples)Shell / cURLPostman collection
Strengths and weaknesses
- +Permanent free tier plus pay-as-you-call billing (1,000 free calls/day) makes it extremely cheap to start and prototype
- +One Call API 3.0 consolidates current, minute, hourly (48h), daily (8d), alerts and 47-year history into one endpoint
- +Hyperlocal ML model updated ~every 10 minutes; vendor cites <1% of temperature predictions deviating more than 5C
- –Reported inconsistency between the Geocoding API and weather endpoints (duplicate/mismatched city results)
- –Meaningful uptime (99.5%+) and faster data refresh are gated behind higher paid tiers; Startup targets only ~95%
- –No prominent public real-time status/incident page for self-service customers
- +60+ data layers far beyond core weather, air quality, pollen, lightning, fire, flood, solar, soil, maritime and aviation indices in one API
- +Unified Timeline endpoint returns realtime, forecast and historical in a single call, simplifying integration
- +Proprietary AI/ML forecasting fusing satellite, model and non-traditional data for hyperlocal results
- –Premium parameters and any real scale are gated behind 'contact sales' with no published paid per-call pricing
- –Forecast accuracy is location-dependent; consumer app users report sizable temperature errors in some areas
- –Reports of slow/unresponsive support on the consumer side
OpenWeather vs Tomorrow.io: questions
- Which has better documentation, OpenWeather or Tomorrow.io?
- Tomorrow.io scores higher on documentation and developer experience: 88 vs 80 out of 100.
- Which is more reliable, OpenWeather or Tomorrow.io?
- Tomorrow.io scores higher on reliability: 85 vs 82 out of 100.
- Do OpenWeather and Tomorrow.io have a free tier?
- OpenWeather: yes (1M calls/mo (classic) + 1k One Call calls/day). Tomorrow.io: yes (Free plan (rate-limited daily/hourly/per-sec)).
- How are OpenWeather and Tomorrow.io priced?
- OpenWeather: Per call / freemium tiers. Tomorrow.io: Per API call / tiered.
- Which has more official SDKs?
- Tomorrow.io lists 8 official SDKs, OpenWeather lists 5.