PurpleAir — Crowdsourced PM Sensor Network
~30,000 crowdsourced PM2.5 / PM10 sensors globally with ~2-minute cadence. Dense complement to AirNow's regulator-grade sites. Quality is noisier but spatial density is unmatched.
| Provider | PurpleAir Inc. |
|---|---|
| Delivery mode | stream |
| CNR score | 70 |
| Cadence | PT2M |
| Origin | https://www2.purpleair.com/ |