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Weather · head to head

PurpleAir vs StormGeo

PurpleAir logo

PurpleAir

Weather

Real-time air quality monitoring for communities

From
$229/one-time
Rated
-
Full reviewWebsite
StormGeo logo

StormGeo

Weather

Weather intelligence for shipping optimization

From
$800/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: PurpleAir purpleAir sensors are one-time hardware purchases rather than a subscription, priced $199 to $279 USD per unit for named models (PA-I-Indoor, PA-II, PA-II-SD), per the vendor's own store (archived, 2021).; StormGeo no longer independent as fully owned subsidiary of Alfa Laval since June 2021
  • They diverge on capability: PurpleAir covers PM2.5 monitoring, StormGeo covers Weather routing.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which PurpleAir and StormGeo actually diverge.

Attributes where PurpleAir and StormGeo differ
AttributePurpleAirStormGeo
Starting price$229/one-time$800/month
Pricing modelone-timesubscription
PlatformsWeb, Api, HardwareWeb, Windows, Api
Founded20151997

Identical on both: free tier (No), 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 PurpleAir

  • PM2.5 monitoring
  • Real-time map
  • Historical data
  • Community network
  • API access
  • API access
  • Home Assistant
  • Data downloads

Only in StormGeo

  • Weather routing
  • Voyage optimization
  • Fleet performance analytics
  • Safety alerts
  • ECDIS systems
  • Fleet management platforms
  • ERP systems
  • Windows support

Both cover

  • Web support
  • Api support

What people use each for

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

PurpleAir

  • Professional Worknot StormGeo
  • Content Creationnot StormGeo

StormGeo

No use cases recorded yet. See the StormGeo review.

Where each one falls short

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

PurpleAir

  • PurpleAir sensors are one-time hardware purchases rather than a subscription, priced $199 to $279 USD per unit for named models (PA-I-Indoor, PA-II, PA-II-SD), per the vendor's own store (archived, 2021).

StormGeo

  • No longer independent as fully owned subsidiary of Alfa Laval since June 2021
  • Primarily Europe-based with less established presence in Asian maritime markets compared to Weathernews
  • Focused on commercial and industrial sectors rather than consumer weather services

Pricing, plan by plan

PurpleAir

$229/one-time
  • Outdoor Sensor$229/one-time
    • PM2.5 monitoring
    • Cloud connectivity
    • Map access
  • Indoor Sensor$199/one-time
    • Indoor monitoring
    • WiFi enabled
    • Real-time data

StormGeo

$800/month
  • s-Suite$2000/month
    • Weather routing
    • Voyage optimization
    • Fleet performance

Which should you pick?

Choose PurpleAir if

  • You need pm2.5 monitoring.
  • You work on Web, Api, Hardware.
  • You also want real-time map.
PurpleAir review

Choose StormGeo if

  • You need weather routing.
  • You work on Web, Windows, Api.
  • You also want voyage optimization.
StormGeo review

Questions people ask

Is PurpleAir or StormGeo better?
Neither clearly leads. PurpleAir starts at $229/one-time and StormGeo at $800/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PurpleAir or StormGeo?
PurpleAir starts at $229/one-time and StormGeo at $800/month.
Does PurpleAir or StormGeo run on more platforms?
PurpleAir runs on Web, Api, Hardware. StormGeo runs on Web, Windows, Api.
What is PurpleAir best used for?
PurpleAir is most often used for professional work, content creation. Of those, professional work and content creation are not what StormGeo is typically brought in for.
What can PurpleAir do that StormGeo cannot?
PurpleAir covers PM2.5 monitoring, Real-time map, Historical data, Community network. StormGeo covers Weather routing, Voyage optimization, Fleet performance analytics, Safety alerts. Both handle Web support, Api support.

Answered from the vendors’ own pages

StormGeo: What industries does StormGeo serve?

StormGeo serves shipping, oil and gas, renewable energy, utilities, aviation, and cross-industry sectors with weather intelligence, routing, and operational decision support services.

Source
StormGeo: What is s-Suite and what does it include?

s-Suite is StormGeo's complete, one-stop solution for shipping companies combining Voyage Planning, Onboard Route Optimization, Route Advisory Services and Fleet Performance Management.

Source
StormGeo: Does StormGeo offer weather routing for maritime operations?

Yes. StormGeo provides Weather Routing and Voyage Optimization services that empower onboard and shoreside teams to plan and execute optimized, compliant voyages by combining AI-driven insights, advanced technology, and weather intelligence.

Source
StormGeo: What is the s-Planner product used for?

StormGeo's s-Planner integrates route optimization and weather insights with up-to-date Electronic Navigational Charts and Publications to streamline onboard voyage planning workflow.

Source
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