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IQAir vs OpenWeatherMap

IQAir logo

IQAir

Weather

Global air quality information and purification

From
$399/one-time
Rated
-
Full reviewWebsite
OpenWeatherMap logo

OpenWeatherMap

Weather

Developer-friendly weather API with global coverage

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only OpenWeatherMap has a free tier, so it costs nothing to try first.
  • Each has a real cost: IQAir extremely expensive compared to competitors with similar particle filtration performance; OpenWeatherMap free tier capped at 60 calls/minute and 1,000,000 calls/month
  • They diverge on capability: IQAir covers Global AQI data, OpenWeatherMap covers Weather API.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which IQAir and OpenWeatherMap actually diverge.

Attributes where IQAir and OpenWeatherMap differ
AttributeIQAirOpenWeatherMap
Starting price$399/one-timeFree
Pricing modelUnknownfreemium
Free tierNoYes
PlatformsWeb, iOS, Android, HardwareWeb
Founded19632017

Identical on both: 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 IQAir

  • Global AQI data
  • City rankings
  • Health recommendations
  • API access
  • Mobile apps
  • Smart home
  • Ios support
  • Android support

Only in OpenWeatherMap

  • Weather API
  • Current conditions
  • Weather maps
  • REST API
  • JSON format
  • Widgets

Both cover

  • Forecasts
  • Historical data
  • Web support
  • Api support

What people use each for

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

IQAir

  • Checking real-time outdoor and indoor air quality (AQI, PM2.5, etc.) via the AirVisual appnot OpenWeatherMap
  • Getting air quality forecasts for a locationnot OpenWeatherMap
  • Remotely monitoring and controlling IQAir air purifiers from a smartphonenot OpenWeatherMap
  • Integrating air quality/weather data into third-party apps via the AirVisual APInot OpenWeatherMap
  • Tracking global air pollution using monitoring station datanot OpenWeatherMap

OpenWeatherMap

  • Embedding current weather and short-term forecasts into third-party apps/websitesnot IQAir
  • Pulling historical and statistical weather data for researchnot IQAir
  • Displaying weather map overlays (precipitation, clouds, etc.) via the Weather Maps APInot IQAir
  • Monitoring air pollution levels via the Air Pollution APInot IQAir
  • Geocoding locations for weather lookupsnot IQAir

Where each one falls short

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

IQAir

  • Extremely expensive compared to competitors with similar particle filtration performance
  • Energy inefficient motors consume 215W at comparable CFM to cheaper models
  • Limited sensor specificity for users with specific allergies or respiratory concerns
  • Bulky design and outdated appearance unsuitable for modern interior design
  • Replacement filters are very expensive at $199.99 with high ongoing costs

OpenWeatherMap

  • Free tier capped at 60 calls/minute and 1,000,000 calls/month
  • Free tier limited to current weather, 3-hour/5-day forecast, air pollution, 15 map layers, and geocoding only
  • One Call API free allowance is only 1,000 calls/day before pay-per-call charges apply
  • Paid tier (Startup, Developer, Professional, Expert) exact USD prices are not published on the public pricing page

Pricing, plan by plan

IQAir

$399/one-time
  • Atem Desk$399/one-time
    • Portable desktop air purifier
    • Small room coverage
  • Atem Eco$799.99/one-time
    • Smart air purification
    • Most affordable smart model
    • Released June 2026
  • Atem X$1399/one-time
    • Premium smart purifier
    • Large room coverage
    • Advanced filtration
  • HealthPro Plus$949/one-time
    • Medical-grade HyperHEPA filtration
    • Large room coverage
    • Gas and particle filtration

OpenWeatherMap

Free
  • FreeFree
    • 1,000 free API calls per day

Which should you pick?

Choose IQAir if

  • You need global aqi data.
  • You work on Web, iOS, Android, Hardware.
  • You also want city rankings.
IQAir review

Choose OpenWeatherMap if

  • You need weather api.
  • You want to start without paying.
  • You also want current conditions.
OpenWeatherMap review

Questions people ask

Is IQAir or OpenWeatherMap better?
Neither clearly leads. IQAir starts at $399/one-time and OpenWeatherMap at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, IQAir or OpenWeatherMap?
OpenWeatherMap has a free tier; the other does not. Paid plans start at $399/one-time for IQAir and Free for OpenWeatherMap.
Does IQAir or OpenWeatherMap run on more platforms?
IQAir runs on Web, iOS, Android, Hardware. OpenWeatherMap runs on Web.
Can I use OpenWeatherMap for free?
Yes. OpenWeatherMap has a free tier, so you can try it without paying. IQAir starts at $399/one-time.
What is IQAir best used for?
IQAir is most often used for checking real-time outdoor and indoor air quality (aqi, pm2.5, etc.) via the airvisual app, getting air quality forecasts for a location, remotely monitoring and controlling iqair air purifiers from a smartphone, integrating air quality/weather data into third-party apps via the airvisual api. Of those, checking real-time outdoor and indoor air quality (aqi, pm2.5, etc.) via the airvisual app and getting air quality forecasts for a location are not what OpenWeatherMap is typically brought in for.
What can IQAir do that OpenWeatherMap cannot?
IQAir covers Global AQI data, City rankings, Health recommendations, API access. OpenWeatherMap covers Weather API, Current conditions, Weather maps, REST API. Both handle Forecasts, Historical data, Web support, Api support.

Answered from the vendors’ own pages

IQAir: What does IQAir do?

IQAir is a Swiss company providing two main services: air purification hardware (home and commercial air purifiers and filters) and air quality monitoring (real-time global air quality data from 80,000+ sensors worldwide, accessible via the AirVisual app and IQAir.com).

Source
OpenWeatherMap: How much does OpenWeatherMap cost?

OpenWeatherMap operates on a pay-as-you-call usage-based pricing model. The platform offers a free tier with 1,000 API calls per day, and customers can purchase additional calls based on their needs.

Source
IQAir: How much do IQAir air purifiers cost?

IQAir air purifiers range from $399 for portable Atem models to $949 for the HealthPro Plus. The new Atem Eco model is $799.99. Replacement filters cost $199.99 and last 1-4 years depending on usage.

Source
OpenWeatherMap: Is there a free weather API service?

Yes. OpenWeatherMap provides a free tier that includes up to 1,000 API calls per day. Users can subscribe for free at home.openweathermap.org without providing payment information.

Source
IQAir: What real-time air quality data does IQAir provide?

IQAir provides real-time air quality data covering 500,000+ locations in 100+ countries, integrating data from government monitoring stations and 80,000+ IQAir-validated sensors. The platform measures PM2.5, PM10, and AQI for each location.

Source
OpenWeatherMap: Does OpenWeatherMap offer enterprise plans?

OpenWeatherMap offers separate service tiers for enterprise customers, with pricing and features determined on a case-by-case basis. Contact the company directly for enterprise plan details and custom pricing.

Source
IQAir: Does IQAir have a mobile app?

Yes. IQAir's AirVisual app is available on iOS and Android, providing real-time air quality information, AQI rankings, health recommendations, and remote control of IQAir smart air purifiers.

Source
IQAir: Is IQAir affordable compared to other air purifiers?

No. IQAir air purifiers are significantly more expensive than alternatives. The HealthPro Plus at $900 offers similar particle filtering to the Winix 5500-2 at $300. Higher cost is primarily due to superior gas filtration but poor overall value for most users.

Source
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