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Weather · head to head

Tomorrow.io vs Weather Underground

Tomorrow.io logo

Tomorrow.io

Weather

Weather intelligence platform for business decisions

From
Free
Rated
-
Full reviewWebsite
Weather Underground logo

Weather Underground

Weather

Crowdsourced hyperlocal weather from personal stations

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Tomorrow.io no transparent pricing displayed on marketing website; Weather Underground free public API discontinued as of December 31, 2018 with no new developer accounts accepted
  • They diverge on capability: Tomorrow.io covers Minute-by-minute forecasts, Weather Underground covers Personal weather stations.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Tomorrow.io and Weather Underground actually diverge.

Attributes where Tomorrow.io and Weather Underground differ
AttributeTomorrow.ioWeather Underground
Pricing modelUnknownfreemium
PlatformsWeb APIWeb, Mobile web, Personal Weather Station network
Founded20162003

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Weather).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Tomorrow.io

  • Minute-by-minute forecasts
  • Weather API
  • Road conditions
  • Air quality
  • Pollen data
  • REST API
  • Webhooks
  • Enterprise systems

Only in Weather Underground

  • Personal weather stations
  • Hyperlocal data
  • Historical records
  • Webcams
  • Community forums
  • PWS networks
  • Smart home
  • APIs

Both cover

  • Web support
  • Ios support
  • Android support

What people use each for

The jobs each tool is most often brought in to do.

Tomorrow.io

  • Real-time weather data for mobile applicationsnot Weather Underground
  • Enterprise weather risk managementnot Weather Underground
  • Fleet management and routing optimizationnot Weather Underground
  • Agricultural decision-making systemsnot Weather Underground
  • Supply chain planningnot Weather Underground

Weather Underground

  • Professional Worknot Tomorrow.io
  • Content Creationnot Tomorrow.io

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Tomorrow.io

  • No transparent pricing displayed on marketing website
  • Requires contacting sales for enterprise platform demos
  • Free tier limited to Weather API with usage restrictions
  • Custom pricing model makes budget planning difficult for prospective customers

Weather Underground

  • Free public API discontinued as of December 31, 2018 with no new developer accounts accepted
  • Previous enterprise pricing was expensive at $150/month for Cumulus Drizzle plan
  • No longer competitive for developers needing reliable weather API access
  • Service is in wind-down phase with limited future development

Pricing, plan by plan

Tomorrow.io

Free

No published plan breakdown. See the Tomorrow.io review.

Weather Underground

Free
  • FreeFree
    • PWS data access
    • Forecasts
    • Historical data
  • Ad-Free$1.99/month
    • No advertisements
    • Premium features

Which should you pick?

Choose Tomorrow.io if

  • You need minute-by-minute forecasts.
  • You want to start without paying.
  • You work on Web API.
  • You also want weather api.
Tomorrow.io review

Choose Weather Underground if

  • You need personal weather stations.
  • You want to start without paying.
  • You work on Web, Mobile web, Personal Weather Station network.
  • You also want hyperlocal data.
Weather Underground review

Questions people ask

Is Tomorrow.io or Weather Underground better?
Neither clearly leads. Tomorrow.io starts at Free and Weather Underground at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Tomorrow.io or Weather Underground?
Tomorrow.io starts at Free and Weather Underground at Free.
Does Tomorrow.io or Weather Underground run on more platforms?
Tomorrow.io runs on Web API. Weather Underground runs on Web, Mobile web, Personal Weather Station network.
Can I use Tomorrow.io for free?
Both have a free tier, so you can try either at no cost before committing.
What is Tomorrow.io best used for?
Tomorrow.io is most often used for real-time weather data for mobile applications, enterprise weather risk management, fleet management and routing optimization, agricultural decision-making systems. Of those, real-time weather data for mobile applications and enterprise weather risk management are not what Weather Underground is typically brought in for.
What can Tomorrow.io do that Weather Underground cannot?
Tomorrow.io covers Minute-by-minute forecasts, Weather API, Road conditions, Air quality. Weather Underground covers Personal weather stations, Hyperlocal data, Historical records, Webcams. Both handle Web support, Ios support, Android support.

Answered from the vendors’ own pages

Tomorrow.io: Does Tomorrow.io offer free access?

Yes, Tomorrow.io offers a free Weather API tier for development and limited production use. Access the free tier by signing up at app.tomorrow.io/signup.

Source
Weather Underground: What happened to the Weather Underground API?

The free public API was discontinued on December 31, 2018, after IBM acquired The Weather Company. The service is now in a wind-down phase with no new developer accounts accepted.

Source
Tomorrow.io: How much do Tomorrow.io enterprise solutions cost?

Tomorrow.io does not publish specific enterprise pricing. Customers must contact sales or request a demo to receive custom quotes for their platform suites (Shield, Forge, GroundControl, Altitude, Gridline).

Source
Weather Underground: Can I still use Weather Underground's data?

Free API keys are still available for Personal Weather Station (PWS) owners who upload data to the network. General developers need to migrate to alternative weather API providers.

Source
Tomorrow.io: What platforms does Tomorrow.io offer?

Tomorrow.io offers weather data via its free API, plus enterprise platforms including Shield for risk management, Forge for operations, GroundControl for aviation, Altitude for advanced analytics, Gridline for utilities, and Trackline for transportation.

Source
Weather Underground: What was the pricing for Weather Underground's Cumulus plans?

The Cumulus Drizzle plan cost $150/month, which many developers found prohibitively expensive for weather data compared to modern alternatives.

Source
Weather Underground: Does Weather Underground still offer a consumer-facing service?

Yes. The consumer website continues to provide weather forecasts, news, alerts, and access to personal weather station data through the PWS network.

Source
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