Search Knowledge Base

How air quality data contributors and sources are credited on the IQAir website and app?

Why are some data contributors "anonymous"?

How is air quality data validated before publishing on the AirVisual platform?

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

How do I get my station's data through API?

Why does the AirVisual Pro monitor PM2.5 and CO2?

Will AirVisual Outdoor sensors communicate effectively if the location is made of concrete or cinderblock?

What is an air quality widget and how can I use one to display air quality information on my webpage?

How to update your outdoor data contributor profile

How does the Live Major Cities Ranking work?

IQAir implements 2024 update to U.S. EPA Air Quality Index (AQI)

My PM2.5 sensor has got 'stuck' on a very high number

Access AirVisual's AQI, Air quality and pollution API

AirVisual Pro maintenance and sensor recalibration

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

How to change the language of your App

Why does your AQI differ from other sites?

How to Update AVO Firmware with an SD Card

What is the difference between the US AQI and WHO air quality guidelines?

AirVisual Pro API returned JSON format

How can I access air pollution data through AirVisual's air quality API?

My serial number does not exist

Why are AirVisual and AirNow showing different AQI numbers?

How can I access historical data on the IQAir platform?

Download or export your AirVisual device's data

How to remove or move a location/station in the AirVisual app?

AirVisual Network Specification

No nearby location / the app assumes wrong location

Outdoor low cost sensor Comparison Chart

How to provide public air quality data with AirVisual Outdoor

What is PM2.5?

Which Atem Series filter is better: Atem Desk or Atem Car?

How often should I run my system and at what speed?

Cannot register my monitor's serial number

Why is your air quality index different from other sites?

Where is the display screen for the AirVisual Outdoor?

What is the differences between AirVisual Outdoor and Purpleair?

How accurate is AirVisual's air quality data?

How to connect the AirVisual Pro to Wi-Fi?

Where can I find my AirVisual Pro's serial number?

What is the difference in an AirVisual Outdoor, Purple Air and Clarity Node-S?

Main pollutant thresholds for US and China Air Quality Indexes (AQI)

How to download the raw data from your IQAir device/sensor?

Why is the AirVisual Pro's screen reading different to what is shown on the app?

How can I access the PM10 measurements from my AirVisual Pro?

Why is the US Air Quality Index used in the ranking?

How are Hanoi's AQI and the city rankings calculated?

How are Hanoi's air quality (AQI) and the major city rankings calculated?

AHAM & CADR (FAQ#14) AHAM testing is generally flawed. It calls its test CADR or Clean Air Delivery Rate. * AHAM does not create realistic test cond...