Ambient Weather AQIN Wireless Indoor Air Quality Index PM2.5, PM10 and CO2 Particulate Monitor


Indoor AQIN (PM2.5, PM10, and CO2) Particulate Monitor is a highly sophisticated indoor Particle sensor monitor that works with Ambient Weather’s most advanced weather stations.

Availability: In stock


The Ambient AQIN indoor sensor can be positioned anywhere in and around your home to monitor PM2.5, PM10, and CO2 concentration levels. Sends data to where you can monitor and analyze the air quality. Send alerts. Compatible with Google Home and Amazon Alexa. The sensor is a high-quality Swiss-made Sensirion Particle Sensor. PM2.5 refers to particles that are 2.5 microns or smaller in diameter. PM10 refers to particles that are 10 microns or smaller in diameter. The Sensirion Particle Sensor uses laser scattering to radiate suspending particles in the air, then collects scattering light to obtain the curve of scattering light change with time. The microprocessor calculates equivalent particle diameter and the number of particles with different diameter per unit volume.

Note: The AQIN is not a stand alone sensor. It is only compatible with the Ambient Weather WS-2000 and WS-5000 Weather Stations.

BEFORE YOU ORDER, make sure you upgrade the firmware first:

Notes and Limitations:

Place the sensor in a well-ventilated, non-moisture condensing area.

The AQIN Wireless Indoor Particulate Monitor has a water resistance rating of IPX0 (for indoor use only; this product has no special protection from water).

With PM2.5 and PM10 sensors, water droplets reflect the light, and can result in a higher reading. This is characteristic of the inherent sensor design. The condition occurs when: Temperature – Dew point Temperature ≤ 2ş C (3.6 şF). Thus, when the air is nearly saturated, the data is invalid.

The PM25IN and AQIN use the same channel on the WS-1965, WS-2000, WS-5000 and OBSERVERIP2.0. Each receiver will only support one PM25IN or one AQIN, not both.

Printed on the part as WH45 or WH45B.


AQIN Features

  • Sensor reporting interval: 1 minute (AC Power, provided), 10 minutes (battery power)
  • 915 MHz frequency
  • 300 ft line of sight (100 ft in most conditions)

AQI Category: PM2.5 Breakpoints

  • Good: 0.0 – 12.0 (µg/m3)
  • Moderate: 12.1 – 35.4 (µg/m3)
  • Unhealthy (Sensitive Groups): 35.5 – 55.4 (µg/m3)
  • Unhealthy: 55.5 – 150.4 (µg/m3)
  • Very Unhealthy: 150.5 – 250.4 (µg/m3)
  • Hazardous: 250.5 – 350.4 (µg/m3)
  • Extremely Hazardous: 350.5 – 500 (µg/m3)

AQI Category: PM1.0 Breakpoints

  • Good: 0.0 – 54 (µg/m3)
  • Moderate: 55-154 (µg/m3)
  • Unhealthy (Sensitive Groups): 155-254 (µg/m3)
  • Unhealthy: 255-354 (µg/m3)
  • Very Unhealthy: 355-424 (µg/m3)
  • Hazardous: 425-604 (µg/m3)
  • XML Feeds

PM 2.5

  • Range: 0- 999 ug/m3
  • Accuracy:>100ug/m3, ±15% <100ug/m3, ±15ug/m3
  • Resolution: 1ug/m3

PM 10

  • Range: 0- 999 ug/m3
  • Accuracy:>100ug/m3, ±25% <100ug/m3, ±25ug/m3
  • Resolution: 1ug/m3


  • Range: 0- 40000 ppm
  • Accuracy:400-10000ppm ±(30ppm±3%
  • Resolution: 1ppm


  • Range:-40.0-60.0°C (-40°F-140°F)
  • Accuracy:±1°C or 2°F
  • Resolution:0.1°C or 0.1°F


  • Range:-40.0-60.0°C (-40°F-140°F)
  • Accuracy:±5%
  • Resolution:1%



Range: 0-999ug/m3

Accuracy: >100ug/m3, ±15%, <100ug/m3, ±15ug/m3 (at 25°C ±5°C)

Resolution: 1ug/m3

Sensor Dimensions: 2.8 x 4.0 x 2.7 inches

Sensor Power: 2 x AA Rechargeable Lithium Batteries (w/o AC power estimated life 1-2 weeks), USB AC Adapter w/ battery backup

Product Support Questions