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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 to provide public air quality data with AirVisual Outdoor

With your AirVisual Outdoor air quality monitor, outdoor air qualit...

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/th-en/world-a...

Why does your AQI differ from other sites?

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

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...

What is considered good air quality?

Good air quality achieves an AQI from 0-50 and is considered little...

Edit your air quality data's timestamp in Excel after downloading

After downloading air quality data from your AirVisual monitor, you...

How can I rename my AirVisual Pro?

To rename your AirVisual device, you must be its owner and you must...

How to deregister/unlink my AirVisual device

If you wish to register your AirVisual monitor to a new AirVisual a...

What is the differences between PurpleAir and Clarity data and our data?

Quality assurance validation testing is performed on data generated...

How can I reset my AirVisual Pro?

How can I reset my AirVisual Pro?

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...

How can I see the PM2.5 concentration in µg/m3 on my AirVisual Pro?

By default, the Node/Pro displays only the AQI [https://www.iqair.c...

What's the difference between the AirVisual Enterprise and regular account?

When logging on to view the AirVisual web dashboard and view your d...

Where can I see when a location's data last updated?

Where can I see when a location's data last updated?

How can I use the AirVisual app’s widget on my phone?

The AirVisual app provides the option to add an AQI widget display ...

My city's data is unavailable on the AirVisual map

AirVisual currently provides data for over 80,000 locations worldwi...

Why is PM2.5 chosen for this ranking?

PM 2.5 is widely regarded as the pollutant with most health impact ...

Warum sind einige Städte und Länder nicht in diesem Luftqualitätsranking aufgeführt?

Es gibt mehrere Gründe, warum eine Stadt oder ein Land nicht Teil d...

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

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

Why does my data differ from the PurpleAir platform and IQAir platform?

In order to improve the accuracy and reliability of the data report...

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...

Accessing PM10 data from AirVisual Pro

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

Is missing data from stations common? How is the missing data treated in this ranking and which countries have bad data quality?

It is not uncommon for hourly measurements to be missing from sourc...

How accurate is AirVisual’s data in Vietnam?

In Vietnam, AirVisual reports data from both governmental and non-g...

Does IQAir calibrate/adjust government sensors on the IQAir platform?

No. We don’t calibrate for government sensors, because these device...

Credits for AirVisual earth rendering

For AirVisual Earth rendering, we'd like to thank: - Cameron Beccar...

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 to change my AirVisual account password

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

AirVisual API timestamp - how does it work?

Understanding the API timestamp is important for accurately represe...

How to connect the AirVisual Pro to Wi-Fi?

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

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 AirVisual Pro forecasts air quality

Air quality forecasts are generated by using machine learning, a su...

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...

What do the statistics mean in the monthly email report for contributors?

In the monthly email report, we provide some statistics related to ...

AirVisual Outdoor sensors modules should be replaced how often?

AirVisual Outdoor sensors modules should be replaced how often?

How can I become a Contributor?

Step 1: Purchase a sensor. Step 2: Install your sensor outdoors. St...

I am receiving too many Air Quality Notifications/Alerts.

IQAir is currently working on a fix to receiving too many push noti...

In Vietnam, where does AirVisual get its data from?

In Vietnam and across the world, AirVisual reports air quality data...

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

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

How far back does the data go?

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

Can I move my AirVisual device to a different organization?

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

Do you want to calculate your AQI without the 6 pollutants?

Do you want to calculate your AQI without the 6 pollutants?

How long does it take to become a Contributor?

It can take up to 30 days to hear back from the verification team, ...

Connecting the Pro to Wi-Fi networks (captive portal)

At the moment, the Pro does not support a connection to an office, ...

How is historical data being incorporated in the ranking dataset?

In cities which are covered by both European Environment Agency (EE...

What is the size of the AirVisual Pro's screen?

The AirVisual Pro has a 5” wide LED display screen, slightly larger...

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