Airbox

An open-source pm2.5 sensor and website
Feature:
A low cost IoT WiFi/BLE based Airbox with pm1.0, pm2.5, pm10, Temperature and Humidity.

• pm2.5 Sensor(UART): PMSA003. 25 USD
  
• Temperature/Humidity(optional): DHT11 5 USD or DHT22 10 USD
  
• Display(optional): Seed OLED Display 15 USD
  

HTTP API

$ curl http://192.168.10.96

Main Board

RedBear Duo for WiFi/BLE. 25 USD. Or any kind of development board.

Easily to display on Kibana

It also provides real-time air quality