Technical Details
Relative humidity represents the concentration of water vapour in the air. It varies significantly based on location and weather, from the dry air of Death Valley, California (5–15% RH), to the saturated air on a rainy day (90–100% RH).
Optimal RH levels depend on acclimatization, temperature, and seasonal variations. Health Canada provides the following guidelines for residential environments:
- Lower Limit: 30% RH (year-round)
- Upper Limit: 55% RH in winter; up to 80% RH in summer
Effects of Low Humidity (< 25% RH):
- Dry skin and irritation
- Respiratory issues such as asthma, bronchitis, and nosebleeds
- Dehydration due to increased fluid loss during respiration
- Static electricity, causing mild shocks
Effects of High Humidity (> 55–60% RH):
- Increased discomfort, particularly in warm temperatures
- Risk of heat exhaustion and heat stroke
- Growth of mould and microorganisms in damp conditions
Our IAQ survey integrates RH measurement with other critical parameters, providing a comprehensive understanding of your indoor environment. The final report offers actionable insights to ensure your space remains within recommended humidity ranges.
Contact Us
For expert assistance in monitoring and improving your indoor air quality, contact LCS Laboratory Inc. or visit our Indoor Air Quality Testing page.
