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Featured Article

How the U.S. State Department started a Chinese environmental movement (Part 1 of 4)

READ FULL STORY >

The U.S. Embassy in China used air quality monitoring to change the course of health and air pollution in China – but that progress is under threat. See why.
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How can I check the data source of a station?

How can I check the data source of a station?

Learn which different data sources AirVisual uses to report air quality for cities and stations, and how to identify them Read More >
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Accessing data through AirVisual's API

There are 3 different API plans, with different levels of data detail, and scaled call limits. Read More >
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Indoor/outdoor sensors in AirVisual Pro

Outdoor information on the Pro's screen is via Wi-Fi from your nearest official monitoring station. Read More >
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What is the difference between the US AQI and WHO air quality guidelines?

There are significant differences between the US AQI and WHO air quality guidelines. Learn more. Read More >
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My PM2.5 sensor has got 'stuck' on a very high number

It is possible for a large particle, such as a piece of dust, to get stuck in the sensor chamber. Read More >
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How PM2.5 sensor and CO2 sensor work.

The Node/Pro uses a light scattering laser sensor for PM2.5 measurements; an infrared lamp to measure CO2. Read More >
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Using AirVisual app’s widget on my phone

The AirVisual app provides the option to add an AQI widget display to your phone home screen. Read More >
Apple Watch Troubleshooting

Apple Watch Troubleshooting

Learn how to correct issues with using the AirVisual app on the Apple Watch Read More >
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Download Node/Pro's data using Samba

Samba is the standard Windows interoperability suite of programs for Linux and Unix. Learn more. Read More >
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How to claim your PurpleAir sensor

Learn how to claim and promote your PurpleAir sensor by creating a contributor profile. Read More >
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AirVisual’s data can differ from others.

Update frequency, and data source are reasons that air quality indices can differ. Read More >
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Changing the language of your app

The language of the AirVisual app is dependent on the language of the phone. Learn more. Read More >
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