The PurpleAir PA-II sensor is very reliable. Three years ago we deployed 25 sensors throughout our region and they are all still running strong with high confidence.
James Lucas
I ordered a sensor last year to get accurate air quality readings in my neighborhood. The sensor works GREAT, customer service is GREAT, and I have no complaints. Highly recommend this product and company.
Patty Thomas
Brilliant company, responsive to customers' needs. The sensors are an excellent product and are gaining many fans in New Zealand.
Have you ever seen smog linger over a city? Well, this is often caused by a Temperature Inversion, and it’s a deviation from the normal meteorological phenomenon. Learn what it is, what causes it, and how it impacts our environment.
Different countries have different scales and ranges due to specific national standards. The public health advisory also changes with these ranges. Let’s dive deep into what an AQI scale is, what changes its readings, and what some standard AQI scales are from around the world.
