Observation log, not medical diagnosis

Indoor air quality log

Keep room-level readings and spot trends. The 1,000 ppm CO₂ value is a long-term 24-hour recommendation, so a spot reading is not a compliance test. Radon must be interpreted using Health Canada testing protocol.

Date/timeRoomCO₂ (ppm)Radon (Bq/m³)PM2.5 (µg/m³)Humidity (%)Temperature (°C)Context / note

Date	Room	CO₂	Radon	PM2.5	RH	°C	Interpretation

Official references used

The log flags CO₂ ≥1,000 ppm for review while noting that Canada’s recommendation is a 24-hour average. Radon ≥200 Bq/m³ is flagged for protocol and mitigation review. For PM2.5, RenoAtlas emphasizes source reduction and trends rather than a false single safe threshold.

Residential indoor air quality guidance ↗ Radon in homes ↗

Related path

Continue with the right tools

These links connect this page to the next useful checks and decisions without repeating the full content.

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