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Weather · head to head

Aeris Weather vs Weather Underground PWS

Aeris Weather logo

Aeris Weather

Weather

Powerful weather API with mapping solutions

From
Free
Rated
-
Full reviewWebsite
Weather Underground PWS logo

Weather Underground PWS

Weather

World's largest personal weather station network

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Aeris Weather aerisWeather now sells as Xweather under Vaisala; Weather Underground PWS personal weather station network relies on community contributions
  • They diverge on capability: Aeris Weather covers Weather API, Weather Underground PWS covers Station network.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Aeris Weather and Weather Underground PWS actually diverge.

Attributes where Aeris Weather and Weather Underground PWS differ
AttributeAeris WeatherWeather Underground PWS
Pricing modelfreemiumfree
PlatformsApi, Web, MobileWeb, Mobile
Founded20111995

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 Aeris Weather

  • Weather API
  • Interactive maps
  • Severe weather alerts
  • Tropical data
  • Historical records
  • REST API
  • Mapping SDKs
  • Mobile SDKs

Only in Weather Underground PWS

  • Station network
  • Real-time upload
  • Historical data
  • Quality control
  • Community rankings
  • PWS devices
  • Data APIs
  • Weather apps

Both cover

  • Api support
  • Web support

What people use each for

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

Aeris Weather

  • Weather data and forecastingnot Weather Underground PWS
  • Mission-critical weather-dependent decisionsnot Weather Underground PWS
  • High-reliability weather intelligence servicesnot Weather Underground PWS
  • Multi-industry weather data distributionnot Weather Underground PWS

Weather Underground PWS

  • Community-sourced weather station networknot Aeris Weather
  • Personal weather monitoring and forecastingnot Aeris Weather
  • Historical weather data accessnot Aeris Weather
  • Severe weather alerts and notificationsnot Aeris Weather

Where each one falls short

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

Aeris Weather

  • AerisWeather now sells as Xweather under Vaisala
  • The free Developer tier is capped at 15,000 API accesses per month and the service pauses once the limit is reached
  • The Developer tier gets community support only
  • The self-serve paid subscription is EUR 300 per month for 1,000,000 accesses per month
  • Anything beyond 1,000,000 accesses per month requires contacting sales for a custom arrangement
  • Dedicated support and custom SLA guarantees are enterprise only
  • Free tier usage resets on the account creation date rather than the calendar month

Weather Underground PWS

  • Personal weather station network relies on community contributions
  • Data accuracy varies by station quality

Pricing, plan by plan

Aeris Weather

Free
  • DeveloperFree
    • 1,000 calls/day
    • Basic data
    • Maps
  • Professional$100/month
    • Unlimited calls
    • All data
    • Premium support

Weather Underground PWS

Free
  • FreeFree
    • Station registration
    • Data upload
    • Dashboard

Which should you pick?

Choose Aeris Weather if

  • You need weather api.
  • You want to start without paying.
  • You work on Api, Web, Mobile.
  • You also want interactive maps.
Aeris Weather review

Choose Weather Underground PWS if

  • You need station network.
  • You want to start without paying.
  • You work on Web, Mobile.
  • You also want real-time upload.
Weather Underground PWS review

Questions people ask

Is Aeris Weather or Weather Underground PWS better?
Neither clearly leads. Aeris Weather starts at Free and Weather Underground PWS at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Aeris Weather or Weather Underground PWS?
Aeris Weather starts at Free and Weather Underground PWS at Free.
Does Aeris Weather or Weather Underground PWS run on more platforms?
Aeris Weather runs on Api, Web, Mobile. Weather Underground PWS runs on Web, Mobile.
Can I use Aeris Weather for free?
Both have a free tier, so you can try either at no cost before committing.
What is Aeris Weather best used for?
Aeris Weather is most often used for weather data and forecasting, mission-critical weather-dependent decisions, high-reliability weather intelligence services, multi-industry weather data distribution. Of those, weather data and forecasting and mission-critical weather-dependent decisions are not what Weather Underground PWS is typically brought in for.
What can Aeris Weather do that Weather Underground PWS cannot?
Aeris Weather covers Weather API, Interactive maps, Severe weather alerts, Tropical data. Weather Underground PWS covers Station network, Real-time upload, Historical data, Quality control. Both handle Api support, Web support.

Answered from the vendors’ own pages

Aeris Weather: How is Xweather pricing structured?

Xweather offers custom pricing for its software products and weather API. Pricing reflects deployment scale, data complexity, reliability requirements, and service scope. Contact Xweather for a personalized quote tailored to your needs.

Source
Weather Underground PWS: Is there a cost to join the Weather Underground Personal Weather Station network?

No cost is disclosed for joining the Weather Underground PWS network. The site encourages users to join and contribute weather data.

Source
Aeris Weather: Does Xweather offer a pay-as-you-go weather API?

Yes. Xweather provides a free weather API key with pay-as-you-go pricing available. Specific rates and API tier details are available at the Xweather API signup portal or by contacting the sales team.

Source
Aeris Weather: What products does Xweather offer pricing for?

Xweather's software products include Protect, Optimize, Observe, Horizon, RoadAI, WeatherDesk, and Powerup. Individual pricing for each product is determined by your deployment requirements and service agreements. Contact Xweather to discuss subscriptions, tiers, SLAs, and specific pricing.

Source
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