{"title":"Adafruit PMSA003I Air Quality Breakout - STEMMA QT / Qwiic","handle":"adafruit-pmsa003i-air-quality-breakout-stemma-qt-qwiic","url":"/products/adafruit-pmsa003i-air-quality-breakout-stemma-qt-qwiic","description":"The Adafruit PMSA003I Air Quality Breakout is a compact laser-scattering particulate matter sensor with an I2C interface — a significant advantage over the UART-based sensors that dominate this category. Simply connect via STEMMA QT / Qwiic and start reading air quality data with no soldering required.\n\nThe sensor uses a laser to illuminate suspended particles in the air, then analyses the scattered light to calculate particle concentrations and size distributions. Data updates once per second over I2C, providing comprehensive readings across multiple particle size categories.\n\nKey Features\n\n\nI2C Interface – Plug-and-play with any I2C-capable microcontroller or single-board computer; no UART or software serial needed\n\nSTEMMA QT / Qwiic Connectors – Two JST SH connectors for solder-free daisy-chaining with other I2C devices\n\nLaser Scattering Sensor – Measures PM1.0, PM2.5, and PM10.0 concentrations in both standard and environmental units\n\nParticle Size Bins – Counts particles per 0.1 L of air in 6 size categories: 0.3 µm, 0.5 µm, 1.0 µm, 2.5 µm, 5.0 µm, and 10 µm\n\n5V Boost Circuit – On-board voltage boost lets you power the sensor from either 3.3V or 5V\n\n1-Second Update Rate – Fresh air quality data every second with built-in checksum verification\n\n\nIdeal For\n\nIndoor and outdoor air quality monitoring stations\nEnvironmental data logging and research\nSmart home air quality dashboards\nBushfire smoke and pollution detection\n\n\nPackage Contents\n\n1× Adafruit PMSA003I Air Quality Breakout (fully assembled with STEMMA QT connectors)\n1× Header strip (for optional breadboard use)\n\n\nResources\n\nAdafruit PM25 AQI Arduino Library\nAdafruit PM25 CircuitPython/Python Library\nIntroduction to STEMMA QT\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":4110,"title":"Default Title","sku":"AF-4632","price":94.03,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":1,"option1":"Default Title"}]}