Air Quality Articles

Expert insights, technical guides, and real-world applications for better indoor air quality

Model O vs AirGradient ONE

Compare sensors, accuracy claims, Ethernet, PoE, Wi-Fi, cloud history, local access, repairability and Canadian pricing.

Product Comparison Compare the Monitors

See 962 side-by-side readings, transparent agreement statistics, test limitations, features, connectivity, and Canadian pricing.

Field Testing See the Comparison

Learn when automatic baseline correction controls drift, when an indoor minimum can bias readings, and why VisiblAir disables it.

Technical Guide Understand Auto-Calibration

Understand the adaptive 1–500 scale, the baseline of 100, how VOC Index differs from TVOC concentration, and how to respond to changes.

Technical Guide Interpret VOC Readings

See live fleet status, historical trends, alerts, configurable metric visibility, map positioning and the features that turn readings into action.

Product Guide Explore the Portal

See how we right-size shipping boxes, reuse packing materials, favour recyclable options, and build and test monitors to order.

Behind the Scenes Read Article

Compare standard and dual-beam NDIR with photoacoustic sensing, accuracy formulas, calibration, pressure, placement, and service life.

Technical Guide Compare CO₂ Sensor Technologies

The power of CO2 and particulate matter sensors to improve health and productivity in learning and working environments.

Health & Wellness Read Article

How CO2 monitors became essential tools during the pandemic for assessing indoor air quality and virus transmission risk.

News Feature Read Article

Comprehensive testing of 5 PM sensors in real wildfire smoke and dust conditions. Discover which sensors perform best.

Field Testing Read Article

Learn about our rigorous calibration procedures and quality assurance measures for accurate air quality sensors.

Technical Standards Read Article

A real-world example of how spider webs can affect sensor accuracy and how to prevent blockages for reliable readings.

Maintenance Guide Read Article

Learn how metric thresholds, email recipients, cool-off periods, muted weekdays, PM pauses, and offline sensor alerts work.

How-To Guide Read Article

See how one PM2.5 reading becomes different US, Canadian, European, Chinese, and Indian air quality index values.

Technical Guide Read Article