Software · head to head
IQAir vs Weatherstack
IQAir
Software
Global air quality information and purification
- From
- $399/one-time
- Rated
- -
The short version
- Only Weatherstack 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; Weatherstack the free tier allows 100 API calls a month, which is a demo rather than a usable allowance
- They diverge on capability: IQAir covers Global AQI data, Weatherstack covers Real-time weather.
Where they differ
Only the attributes on which IQAir and Weatherstack actually diverge.
| Attribute | IQAir | Weatherstack |
|---|---|---|
| Starting price | $399/one-time | Free |
| Pricing model | Unknown | freemium |
| Free tier | No | Yes |
| Platforms | Web, iOS, Android, Hardware | Api |
| Founded | 1963 | 2016 |
Identical on both: user rating (Not yet rated), category (Unknown).
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
- Web support
- Ios support
Only in Weatherstack
- Real-time weather
- Location lookup
- Bulk queries
- REST API
- JSON responses
- HTTPS
Both cover
- Forecasts
- Historical data
- 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 Weatherstack
- Getting air quality forecasts for a locationnot Weatherstack
- Remotely monitoring and controlling IQAir air purifiers from a smartphonenot Weatherstack
- Integrating air quality/weather data into third-party apps via the AirVisual APInot Weatherstack
- Tracking global air pollution using monitoring station datanot Weatherstack
Weatherstack
- Current weather lookups by location in an applicationnot IQAir
- Historical weather data for analysis on the paid tiersnot IQAir
- Short and medium range forecastsnot IQAir
- Bulk location queries on the higher plansnot 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
Weatherstack
- The free tier allows 100 API calls a month, which is a demo rather than a usable allowance
- Historical weather data starts at the Standard plan, $9.99 a month for 50,000 calls
- Forecasting is tiered: 7 days from Professional at $49.99 a month and 14 days from Business at $99.99
- Multi-language responses and bulk queries need Professional or above
- Going past the monthly quota incurs overage charges rather than throttling
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
Weatherstack
Free- FreeFree
- 250 calls/month
- Current weather
- Basic data
- Standard$9.99/month
- 50,000 calls/month
- Forecasts
- Historical
Which should you pick?
Choose IQAir if
- You need global aqi data.
- You work on Web, iOS, Android, Hardware.
- You also want city rankings.
Choose Weatherstack if
- You need real-time weather.
- You want to start without paying.
- You work on Api.
- You also want location lookup.
Questions people ask
- Is IQAir or Weatherstack better?
- Neither clearly leads. IQAir starts at $399/one-time and Weatherstack at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, IQAir or Weatherstack?
- Weatherstack has a free tier; the other does not. Paid plans start at $399/one-time for IQAir and Free for Weatherstack.
- Does IQAir or Weatherstack run on more platforms?
- IQAir runs on Web, iOS, Android, Hardware. Weatherstack runs on Api.
- Can I use Weatherstack for free?
- Yes. Weatherstack 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 Weatherstack is typically brought in for.
- What can IQAir do that Weatherstack cannot?
- IQAir covers Global AQI data, City rankings, Health recommendations, API access. Weatherstack covers Real-time weather, Location lookup, Bulk queries, REST API. Both handle Forecasts, Historical data, 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).
SourceIQAir: 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.
SourceIQAir: 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.
SourceIQAir: 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.
SourceIQAir: 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