Discover the Air Quality Map!

Making the air more transparent!

How does it work? 


The Air Quality Map is an index for reporting daily air quality. 

It tells you how clean or polluted your air is, and what associated health effects might be a concern for you. 

The map displays the particulate matter numbers, in both the PM 2.5 and PM 10 range and the points using the Federal Environmental Protection Agency (EPA) Air Quality Index (AQI) scale. It also track particle counts in six sizes between 0.3um and 10.0um in diameter.

Why is important to control Air Pollution? 


Air pollution is one of the most serious problems in the world. 


It refers to the contamination of the atmosphere by harmful chemicals or biological materials.

Air pollution can cause long-term and short-term health effects. It’s found that the elderly and young children are more affected by air pollution. Short-term health effects include eye, nose, and throat irritation, headaches, allergic reactions, and upper respiratory infections. 

Some long-term health effects are lung cancer, brain damage, liver damage, kidney damage, heart disease, and respiratory disease.


Air pollution causes damage to crops, animals, forests, and bodies of water. 

It also contributes to the depletion of the ozone layer, which protects the Earth from the sun’s UV rays. Another negative effect of air pollution is the formation of acid rain, which harms trees, soils, rivers, and wildlife. Some of the other environmental effects of air pollution are haze, eutrophication, and global climate change.


Sources: Air & Water

What sensors are used and how they works? 


PurpleAir uses PMS5003 laser particle counters. 


These sensors count suspended particles in sizes of 0.3, 0.5, 1.0, 2.5, 5.0 and 10um. These particle counts are processed by the sensor using a complex algorithm to calculate the PM1.0, PM2.5 and PM10 mass in ug/m3.

Purple Air sensors use an ESP8266 chip to talk to the particle counter and provide all functionality, including connecting to a WiFi network and uploading data to the cloud.

The sensors include temperature and humidity sensors. 

Where these are present, there will be graphs for these values. They may also include other detectors in the future like Ozone or other gases.


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