Indoor Air Quality: Why Measure It and How?

21 March 2026
Indoor Air Quality: Why Measure It and How?

Did you know that indoor air can be 2 to 5 times more polluted than outdoor air, according to Health Canada? Yet we spend an average of 90% of our time indoors. Air quality monitors help you understand what you are breathing and act accordingly.

Key Pollutants to Monitor

CO2 (Carbon Dioxide)

Naturally produced by breathing. High CO2 levels (above 1000 ppm) indicate poor ventilation and cause drowsiness and difficulty concentrating. Below 800 ppm is excellent.

VOCs (Volatile Organic Compounds)

Emitted by paints, glues, particleboard furniture, and household products. VOCs include formaldehyde, benzene, and toluene, potentially carcinogenic substances over time.

PM2.5 and PM10 (Fine Particles)

Fine particles penetrate deep into the lungs, produced by cooking, candles, incense, cigarette smoke, or outdoor air entering your home.

Relative Humidity

Too high (above 60%) promotes mold and dust mites. Too low (below 30%) dries out mucous membranes. The ideal range is 40% to 55%.

Radon

This natural radioactive gas, present in basements, is the second leading cause of lung cancer in Canada after smoking. The action level set by Health Canada is 200 Bq/m3.

Types of Measuring Devices

All-in-One Air Quality Monitors

These devices simultaneously measure CO2, VOCs, fine particles, temperature, and humidity with real-time display and mobile app alerts.

Popular examples: Airthings Wave Plus, Awair Element, IQAir AirVisual Pro.

Simple CO2 Detectors

Less expensive, focused only on CO2. Ideal for bedrooms and home offices.

How to Improve Air Quality After Measurement

  • Ventilation: open windows 10 minutes morning and evening, even in winter.
  • Air purifier: HEPA filter for particles, activated carbon for VOCs.
  • Avoid harsh chemicals: prefer natural household products.

Conclusion

Investing in an air quality monitor means investing in your health and your family's health. Devices available on Amazon Canada let you monitor your environment in real time for under $100.

Explore Our Smart Home Products

Air quality monitors integrate perfectly into a smart home. Browse our catalogue for the best devices available on Amazon Canada.

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