Most popular

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 make my outdoor AirVisual device's data public?

1. Choose your location Our AirVisual Outdoor is designed to perfo...

How does the Live Major Cities Ranking work?

The live  Major Cities Ranking [https://www.iqair.com/sg/world-air-...

How can I access historical data on the IQAir platform?

A range of historical air quality data is freely available on the I...

What is the difference between a Host, Sponsor and Contributor?

A Host sets up and maintains air quality station(s). You can receiv...

Calculate AQI without all 6 pollutants?

The pollutant with the highest AQI level, or 'risk to health', is d...

Accessing PM10 data from AirVisual Pro

The AirVisual Pro's PM2.5 sensor also contains an internal PM10 sen...

What is 2.5 PM?

The acronym AQI refers to the air quality index which is an air qua...

Why does your AQI differ from other sites?

Air quality can differ from country to country and can be determine...

My iOS widget doesn't display data

If your iOS widget doesn't display data, most likely you need to ac...

How far back does the data go?

Data for the Air Visual Series goes back up to 5 years. You can fi...

Cannot register my monitor's serial number

If you receive an error message when trying to enter your serial nu...

What value does AirVisual bring to sensor manufacturers?

Once sensor data has been added to the AirVisual platform, we provi...

What figures do you use to get the AQI results

There are two types of US AQI that we publish on the IQAir AirVisua...

Outdoor low cost sensor Comparison Chart

[https://iqairna-prod.crm.dynamics.com/api/data/v9.0/msdyn_knowledg...

Calculate AQI without all 6 pollutants?

The pollutant with the highest AQI level, or 'risk to health', is d...

Changelog: 2018 World Air Quality Report

Changes refer to updates made to the 2018 World Air Quality Report ...

How is IQAir's air quality forecast calculated?

Our team of data scientist uses state of the art deep learning algo...

What is pairing mode and how does it work?

Pairing mode is the term given to when the AirVisual Pro has activa...

Why is your air quality index different from other sites?

Our AQI is calculated hourly and updated hourly. Many other website...

What is the differences between AirVisual Outdoor and Purpleair?

IQAir manufactures the AirVisual Outdoor and Purpleair manufactures...

How to set up my personal pollution exposure tracking

AirVisual app provides a personal exposure dashboard based on the W...

How to connect the AirVisual Pro to Wi-Fi?

To connect the AirVisual Pro to Wi-Fi, you have 2 options:   1- Usi...

How do the PM2.5 sensor and CO2 sensor work?

1. How does the PM2.5 laser sensor work? The AirVisual Node/Pro us...

Can I go outside when its moderate air quality?

Moderate AQI levels range from 51-100. Unusually sensitive people s...

Can I move my AirVisual device to a different organization?

Once a new device has purchased, register the device using the AirV...

What is AirVisual Earth?

AirVisual Earth is the first and only real-time, 3D pollution map a...

What area coverage are the AirVisual Pro's measurements valid for?

For indoor monitoring, the coverage of an AirVisual Pro is a room (...

No nearby location / the app assumes wrong location

If location services are allowed on the AirVisual app, the app will...

Return Policy

To find more information regarding our return policy, see the link ...

Does the AirVisual Pro have an indoor & outdoor sensor?

The AirVisual Pro only comes with one PM2.5 sensor. Outdoor informa...

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...

Apple Watch Troubleshooting

IQAir AirVisual's latest Apple Watch app release will help to ensur...

How many sensor types does AirVisual support?

AirVisual supports more than 50 different sensor types; it is flexi...

How can I choose an effective air pollution mask?

There are two main criteria for choosing an effective air pollution...

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 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...

How to change my AirVisual account password

You can reset your AirVisual account password using the IQAir websi...

AirVisual Pro API returned JSON format

To access your monitor's data using your AirVisual Pro's Device API...

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 is AQI calculated without all 6 key pollutants?

You may have heard that generally an AQI (Air Quality Index) [http:...

Can the IQAir Air Pollution Mask be cleaned?

No. Any attempt to wash the filter layer may cause damage and negat...

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...

How many cities have air quality data on the AirVisual Platform?

The AirVisual Platform has air quality data from more than 10,000 c...

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...

What does the asterisk (*) mean on some locations' AQI?

Whilst the world's coverage of ground-based air monitoring stations...

Connect With IQAir

Sign up for our newsletter