Weather & Environment · head to head
Weatherstack vs IQAir
Weatherstack
Weather & Environment
Real-time weather API trusted by thousands
- From
- Free
- Rated
- -
IQAir
Weather & Environment
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: Weatherstack the free tier allows 100 API calls a month, which is a demo rather than a usable allowance; IQAir extremely expensive compared to competitors with similar particle filtration performance
- They diverge on capability: Weatherstack covers Real-time weather, IQAir covers Global AQI data.
Where they differ
Only the attributes on which Weatherstack and IQAir actually diverge.
| Attribute | Weatherstack | IQAir |
|---|---|---|
| Starting price | Free | $399/one-time |
| Pricing model | freemium | Unknown |
| Free tier | Yes | No |
| Platforms | Api | Web, iOS, Android, Hardware |
| Founded | 2016 | 1963 |
Identical on both: user rating (Not yet rated), category (Weather & Environment).
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 Weatherstack
- Real-time weather
- Location lookup
- Bulk queries
- REST API
- JSON responses
- HTTPS
Only in IQAir
- Global AQI data
- City rankings
- Health recommendations
- API access
- Mobile apps
- Smart home
- Web support
- Ios support
Both cover
- Historical data
- Forecasts
- Api support
What people use each for
The jobs each tool is most often brought in to do.
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
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
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
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
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
Pricing, plan by plan
Weatherstack
Free- FreeFree
- 250 calls/month
- Current weather
- Basic data
- Standard$9.99/month
- 50,000 calls/month
- Forecasts
- Historical
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
Which should you pick?
Choose Weatherstack if
- You need real-time weather.
- You want to start without paying.
- You work on Api.
- You also want location lookup.
Choose IQAir if
- You need global aqi data.
- You work on Web, iOS, Android, Hardware.
- You also want city rankings.
Questions people ask
- Is Weatherstack or IQAir better?
- Neither clearly leads. Weatherstack starts at Free and IQAir at $399/one-time, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Weatherstack or IQAir?
- Weatherstack has a free tier; the other does not. Paid plans start at Free for Weatherstack and $399/one-time for IQAir.
- Does Weatherstack or IQAir run on more platforms?
- Weatherstack runs on Api. IQAir runs on Web, iOS, Android, Hardware.
- 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 Weatherstack best used for?
- Weatherstack is most often used for current weather lookups by location in an application, historical weather data for analysis on the paid tiers, short and medium range forecasts, bulk location queries on the higher plans. Of those, current weather lookups by location in an application and historical weather data for analysis on the paid tiers are not what IQAir is typically brought in for.
- What can Weatherstack do that IQAir cannot?
- Weatherstack covers Real-time weather, Location lookup, Bulk queries, REST API. IQAir covers Global AQI data, City rankings, Health recommendations, API access. Both handle Historical data, Forecasts, 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