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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”?
Why are some data contributors “anonymous”?
How is air quality data validated before publishing on the AirVisual platform?
The AirVisual platform aims to centralize and aggregate as much air...
What does the asterisk (*) mean on some locations' AQI?
Whilst the world's coverage of ground-based air monitoring stations...
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...
How does the Live Major Cities Ranking work?
The live Major Cities Ranking [https://www.iqair.com/au/world-air-...
Download or export your AirVisual device's data
Export data on IQAir Dashboard * OUTDOOR PUBLIC DEVICE If you h...
How to deregister/unlink my AirVisual device
If you wish to register your AirVisual monitor to a new AirVisual a...
How can I access historical data on the IQAir platform?
A range of historical air quality data is freely available on the I...
How to add and remove your followed locations
You can add and remove your followed locations on the AirVisual app...
My iOS widget doesn't display data
If your iOS widget doesn't display data, most likely you need to ac...
What is the difference between a Host, Sponsor and Contributor?
A Host sets up and maintains air quality station(s). You can receiv...
Access AirVisual's AQI, Air quality and pollution API
In order to offer the most value possible through our ever-growing ...
Changelog: 2018 World Air Quality Report
Changes refer to updates made to the 2018 World Air Quality Report ...
AHAM & CADR (FAQ#14)
AHAM & CADR (FAQ#14) AHAM testing is generally flawed. It calls its...
Why does my Wi-Fi disconnect frequently?
The AirVisual Pro remembers your WiFi networks so if you find that ...
What is pairing mode and how does it work?
Pairing mode is the term given to when the AirVisual Pro has activa...
The CO2 levels are high in my bedroom during the night, what should I do?
The best is to measure your bedroom and your children's bedroom to ...
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...
How to connect the AirVisual Pro to Wi-Fi?
To connect the AirVisual Pro to Wi-Fi, you have 2 options: 1- Usi...
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 do each of the buttons on the AirVisual Pro do?
Far Left Button - Power / Sleeping Mode / Back • Switch the device...
How to access the AirVisual Pro's API
The IQAir's AirVisual air quality sensor [https://www.iqair.com/au/...
AirVisual Outdoor sensors modules should be replaced how often?
AirVisual Outdoor sensors modules should be replaced how often?
Why does my data differ from the PurpleAir platform and IQAir platform?
In order to improve the accuracy and reliability of the data report...
How do low-cost sensor owners contribute data and publish a contributor profile?
As an owner or operator of a low-cost air quality sensor, also call...
How accurate is AirVisual’s data in Vietnam?
In Vietnam, AirVisual reports data from both governmental and non-g...
Can I go outside when its moderate air quality?
Moderate AQI levels range from 51-100. Unusually sensitive people s...
Calculate AQI without all 6 pollutants?
The pollutant with the highest AQI level, or 'risk to health', is d...
How can I access air quality forecasts through the AirVisual app and website?
Checking an air quality forecast is one of the most effective ways ...
Why is PM2.5 chosen for this ranking?
PM 2.5 is widely regarded as the pollutant with most health impact ...
Why do I see different AQI numbers between IQAir and other platforms?
Why do I see different AQI numbers between IQAir and other platforms?
Air quality ranking disclaimer
This forecasting model, and all resulting air quality predictions, ...
How is historical data being incorporated in the ranking dataset?
In cities which are covered by both European Environment Agency (EE...
Does IQAir calibrate/adjust government sensors on the IQAir platform?
No. We don’t calibrate for government sensors, because these device...
How do I display PM2.5 AQI and CO2 on the same screen?
The AirVisual Pro's PM2.5 and CO2 measurements are displayed side b...
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...
Why is the AirVisual Pro's screen reading different to what is shown on the app?
Sometimes, it may be the case that your AirVisual Pro's screen may ...
How do I choose my IQAir Mask size?
The IQAir Mask comes in two sizes: Large (L) and Medium (M). L siz...
AirVisual’s outdoor data seems to differ from other sources. Why is this?
AirVisual does its best to provide accurate, reliable, real-time da...
How can I check the data source of a station?
The air quality data reported through the AirVisual platform comes ...
What is the red notification on the AirVisual app icon?
The notifications on the AirVisual icon, also called badge notifica...
My AirVisual Pro is reporting temperatures higher or lower than the actual ambient outdoor temperature. What could be causing this?
In a controlled testing environment, the AirVisual Pro was tested b...
How often does the AirVisual Pro's sensor take measurements? What is the difference between "Continuous" and "Default" mode?
The frequency with which the AirVisual Pro takes measurements depen...
My serial number does not exist
If you're trying to add your Pro's serial number in the app or in t...
I am receiving too many Air Quality Notifications/Alerts.
IQAir is currently working on a fix to receiving too many push noti...
AirVisual Pro API returned JSON format
To access your monitor's data using your AirVisual Pro's Device API...
How precise is the ranking?
The rankings are based on real-world monitoring data from a variety...
How to show AirGradient stations and profiles on the IQAir map
How to show AirGradient stations and profiles on the IQAir map
What is a "Share Code" and where can I find it?
A share code is a unique code for providing others access to the da...