Meet the bluSensor AIQ: a smart air quality sensor with WiFi and Bluetooth that can be operated with a power bank. It can store more than 5000 data points. The device measures CO2, dust, odors, smoke, hazardous organic compounds (VOCs), humidity, temperature and dew point.
This sensor supports Apple HomeKit and IFTTT. The companion app is available for iOS/Android devices. Data can be exported to Excel CSV.