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How air quality data contributors and sources are credited on the IQAir website and app?
IQAir is able to provide the world’s largest database of global air...
Why are some data contributors “anonymous”?
On the IQAir platform, all ground-based stations are attributed to ...
How is air quality data validated before publishing on the AirVisual platform?
The AirVisual platform aims to centralize and aggregate as much air...
How can I access historical data on the IQAir platform?
A range of historical air quality data is freely available on the I...
How are Hanoi’s air quality (AQI) and the major city rankings calculated?
To calculate a city’s overall Air Quality Index (AQI) value, AirVis...
What is the difference between Singapore’s Pollutant Standards Index and the U.S. Air Quality Index?
In Singapore, the National Environment Agency uses the Pollutant St...
AirVisual App and Apple Watch Sync troubleshooting
Thank you for taking the time to make this valuable report - and I'...
How can I make my outdoor AirVisual device's data public?
1. Choose your location Our AirVisual Outdoor is designed to perfo...
What does the asterisk (*) mean on some locations' AQI?
Whilst the world's coverage of ground-based air monitoring stations...
How does the Live Major Cities Ranking work?
The live Major Cities Ranking [https://www.iqair.com/sg/world-air-...
My PM2.5 sensor has got 'stuck' on a very high number
Due to the function of the AirVisual air monitor's PM2.5 sensor, to...
No nearby location / the app assumes wrong location
If location services are allowed on the AirVisual app, the app will...
How many sensor types does AirVisual support?
AirVisual supports more than 50 different sensor types; it is flexi...
What is the difference between a Host, Sponsor and Contributor?
A Host sets up and maintains air quality station(s). You can receiv...
What is 2.5 PM?
The acronym AQI refers to the air quality index which is an air qua...
Apple Watch Troubleshooting
IQAir AirVisual's latest Apple Watch app release will help to ensur...
How to set up my personal pollution exposure tracking
AirVisual app provides a personal exposure dashboard based on the W...
Does the AirVisual Pro have an indoor & outdoor sensor?
The AirVisual Pro only comes with one PM2.5 sensor. Outdoor informa...
AirVisual Pro API returned JSON format
To access your monitor's data using your AirVisual Pro's Device API...
Cannot register my monitor's serial number
If you receive an error message when trying to enter your serial nu...
Can I move my AirVisual device to a different organization?
Once a new device has purchased, register the device using the AirV...
How to change my AirVisual account password
You can reset your AirVisual account password using the IQAir websi...
How do the PM2.5 sensor and CO2 sensor work?
1. How does the PM2.5 laser sensor work? The AirVisual Node/Pro us...
Changelog: 2018 World Air Quality Report
Changes refer to updates made to the 2018 World Air Quality Report ...
What value does AirVisual bring to sensor manufacturers?
Once sensor data has been added to the AirVisual platform, we provi...
What is the differences between AirVisual Outdoor and Purpleair?
IQAir manufactures the AirVisual Outdoor and Purpleair manufactures...
Calculate AQI without all 6 pollutants?
The pollutant with the highest AQI level, or 'risk to health', is d...
How is IQAir's air quality forecast calculated?
Our team of data scientist uses state of the art deep learning algo...
Accessing PM10 data from AirVisual Pro
The AirVisual Pro's PM2.5 sensor also contains an internal PM10 sen...
Return Policy
To find more information regarding our return policy, see the link ...
How to connect the AirVisual Pro to Wi-Fi?
To connect the AirVisual Pro to Wi-Fi, you have 2 options: 1- Usi...
Outdoor low cost sensor Comparison Chart
[https://iqairna-prod.crm.dynamics.com/api/data/v9.0/msdyn_knowledg...
Can the Pro's screen be switched off permanently, while still taking measurements?
Yes, you have the option to disable the screen indefinitely on your...
My iOS widget doesn't display data
If your iOS widget doesn't display data, most likely you need to ac...
What is pairing mode and how does it work?
Pairing mode is the term given to when the AirVisual Pro has activa...
Can I go outside when its moderate air quality?
Moderate AQI levels range from 51-100. Unusually sensitive people s...
What area coverage are the AirVisual Pro's measurements valid for?
For indoor monitoring, the coverage of an AirVisual Pro is a room (...
How can I choose an effective air pollution mask?
There are two main criteria for choosing an effective air pollution...
Why is your air quality index different from other sites?
Our AQI is calculated hourly and updated hourly. Many other website...
What are the photos on station screen and how do I make use of it?
IQAir values every contributor and aims to provide our users with t...
How many cities have air quality data on the AirVisual Platform?
The AirVisual Platform has air quality data from more than 10,000 c...
How far back does the data go?
Data for the Air Visual Series goes back up to 5 years. You can fi...
How many cities have air quality data on the AirVisual Platform?
The AirVisual Platform has air quality data from more than 10,000 c...
Since data measured by AirVisual monitors is used in the ranking, how accurate is AirVisual data?
In order to check the accuracy of AirVisual devices, AirVisual cond...
Where can I find out how dirty my air is where I live?
You can easily download the AirVisual App by IQAir and monitor your...
Can the IQAir Air Pollution Mask be cleaned?
No. Any attempt to wash the filter layer may cause damage and negat...
What is AirVisual Earth?
AirVisual Earth is the first and only real-time, 3D pollution map a...
How can I reset my AirVisual Pro?
You have 3 ways to reset your AirVisual Pro: 1)A soft reset that w...
How is AQI calculated without all 6 key pollutants?
The Air Quality Index (AQI) is a valuable tool
My serial number does not exist
If you're trying to add your Pro's serial number in the app or in t...