The Air Quality Index (AQI) is a combined score based on several
pollutants such as PM2.5, PM10, ozone, carbon monoxide, nitrogen
dioxide, and sulphur dioxide. It reflects outdoor city-level air but not
the exact mix of pollutants in your home. Your Qubo Air Purifier shows real-time PM2.5 readings — fine dust
particles most harmful to health. Indoor PM2.5 levels drop faster when
doors and windows are closed, so your purifier’s readings are often
lower than outdoor AQI. Qubo focuses on PM2.5 because it’s the most accurate and health-relevant
indicator of indoor air quality.
This table shows how PM₂.₅ concentration levels correspond to Air
Quality Index (AQI) values based on the official CPCB (India) standard.
Higher PM₂.₅ levels indicate poorer air quality and greater potential
health risks.
Clean the outer pre-filter and sensor every 15–30 days for best
performance*.
Steps for Q200, Q400, Q500, R250, R700: Steps for Q600, Q1000: Filter Replacement: Replace once every year for best
performance and to avoid product damage. a) Fan speed too high: The noise you hear from your
purifier is generated by the motor and fan during operation. Your
purifier is designed to operate quietly; however, in silent rooms you
may notice some sound. Reduce fan speed or switch to Sleep Mode for
quieter performance. b) Loud in Auto Mode: In Auto Mode, your purifier
adjusts fan speed automatically when air quality changes. If you find
the noise too high, switch to Sleep Mode or manually select a lower
speed. Note: Actual coverage and efficiency may vary depending on open
windows, doors, or room layout. Yes, the purifier also supports manual operation. It displays PM2.5 Indoor values and CPCB Outdoor PM2.5 values in real
time. Yes, via the Qubo app as long as the device is connected to Wi-Fi. Replacement filters are available here: Qubo Store. Yes, link your Qubo account to Google Home or Alexa to enable voice
control. The Smart Air Purifier comes with a 1-year warranty. For full details and
terms, please visit Qubo Warranty Page. How to Clean Smart Air Purifier
Air Quality Category
AQI Range
PM₂.₅ (µg/m³)
Good
0 – 50
0 – 30
Satisfactory
51 – 100
31 – 60
Moderate
101 – 200
61 – 90
Poor
201 – 300
91 – 120
Very Poor
301 – 400
121 – 250
Severe
401 – 500
251 – 500
*Depending upon the pollution surrounding your area and
usage.