Recommended Sensors
Our philosophy: durability over accuracy. A sensor that drifts 5% but runs reliably for 5 years is far more valuable to a permanent network than one that's accurate to 0.1% but needs recalibration every 3 months. Read Why Durability Over Accuracy for the evidence behind this approach.
What We're Measuring
WeSense sensors can report any combination of:
| Reading Type | What It Tells You |
|---|---|
| Temperature | Indoor/outdoor temperature, thermal efficiency |
| Humidity | Comfort, mould risk, dew point |
| Pressure | Weather patterns, altitude |
| CO2 | Ventilation quality, occupancy |
| PM2.5 / PM10 | Air quality, wildfire smoke, traffic pollution |
| VOC | Volatile organic compounds (paints, cleaners, off-gassing) |
| NOx | Combustion byproducts, traffic |
Recommended Sensor Combinations
Where to Buy
What About Accuracy?
Many sensor guides focus on laboratory accuracy. We focus on stability over time because:
- A global network of thousands of slightly-imprecise-but-stable sensors achieves emergent accuracy — the aggregate is more accurate than any individual sensor
- Calibration degrades — an "accurate" sensor that drifts unchecked gives worse data than a stable sensor that was never calibrated
- Most people will not recalibrate sensors — any design that requires periodic calibration will fail at scale
- Government reference stations provide the accuracy baseline — community sensors provide the density
See Why Durability Over Accuracy for detailed evidence.