A weatherproof outdoor air quality monitor that measures PM1, PM2.5, PM10, CO₂, TVOCs, NOx, temperature, and humidity. Built with high‑grade sensors, open‑source firmware, and flexible data connectivity. Mountable on walls or poles. How It Works: [PM1 / PM2.5 / PM10 Monitoring]: Uses the Plantower PMS5003T laser sensor for accurate particulate readings. [CO₂ Monitoring Outdoors]: SenseAir S8 NDIR sensor detects local emission sources that may not produce visible particles — rare in outdoor monitors. [TVOCs & NOx Monitoring]: Sensirion SGP41 provides advanced gas detection for traffic pollution, combustion by‑products, and chemical emissions. [Temperature & Humidity]: Tracks environmental conditions for complete outdoor air profiling. [Weatherproof ASA Enclosure]: UV‑protected, durable, and engineered for accurate airflow and minimal condensation. [Open‑Source Firmware]: Modify, extend, or integrate the device however you like. [Flexible Data Streaming]: Send data to Home Assistant, AirGradient’s platform, or any custom server. [Secure Mounting]: Install on walls or poles using screws or stainless‑steel zip ties, with an anti‑theft screw. A Top Pick For: [Homes]: Track outdoor pollution before it enters your home. [Schools]: Monitor playground and roadside air quality. [Offices]: Identify ventilation needs and outdoor pollution spikes. [Commercial Sites]: Traffic, industrial, or construction monitoring. [Smart Home Users]: Full integration with Home Assistant. Why We Like It: [CO₂ Outdoors]: Very few outdoor monitors include CO₂ — this one does. [Eight Key Metrics]: PM1, PM2.5, PM10, CO₂, TVOCs, NOx, temperature, humidity. [Open‑Source Freedom]: Modify firmware, add sensors, or build custom dashboards. [Weatherproof & Durable]: ASA enclosure resists UV, rain, and temperature swings. [Flexible Data Use]: Send data anywhere — no locked ecosystem. Care And Maintenance [Keep Vents Clear]: Ensure airflow is unobstructed for accurate readings. [Check Mounting Screws]: Tighten periodically, especially after storms. [Firmware Updates]: Apply AirGradient’s open‑source updates for improvements. [Avoid Direct Water Jets]: Weatherproof, but not designed for pressure washing. [Pair With Indoor Monitor]: Compare indoor vs outdoor pollution sources.