AirGradient Open Air Quality Monitor

£294.00
  • Measures PM1 / PM2.5 / PM10.
  • CO₂ (SenseAir S8).
  • TVOCs & NOx (SGP41).
  • Temperature & humidity.
  • Weatherproof ASA enclosure.
  • Wall or pole mounting.
  • Open‑source firmware.
  • Connect to any server.
  • CE, RoHS, REACH, FCC certified.
  • 12‑month warranty.
Estimated delivery on or before

  Free delivery on orders over £50
  14-day hassle-free returns
  100% secure transactions
  Every purchase helps a UK charity
  Over 2000+ happy customers

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Description

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.

 

Specification
  • Model: AirGradient Open Air (O‑1PST)
  • Metrics: PM1, PM2.5, PM10, CO₂, TVOCs, NOx, temperature, humidity
  • Sensors:
    – Plantower PMS5003T (PM)
    – SenseAir S8 (CO₂)
    – Sensirion SGP41 (TVOCs & NOx)
  • Enclosure: UV‑protected ASA plastic
  • Mounting: Wall or pole (screws or stainless‑steel zip ties)
  • Connectivity: Home Assistant, AirGradient platform, custom servers
  • Certifications: CE, RoHS, REACH, FCC
  • Warranty: 12 months
  • Best For: Homes, schools, offices, commercial outdoor monitoring
Includes

  • 1 x AirGradient Open Air Monitor
  • 1 x Mounting hardware
  • 1 x User documentation

Downloads

Download Specification Sheet

Q&A

Q: Does it really measure CO₂ outdoors?
Yes — using the SenseAir S8 NDIR sensor ().

Q: Can I integrate it with Home Assistant?
Yes — full native support.

Q: Is it weatherproof?
Yes — ASA enclosure is UV‑protected and designed for outdoor use.

Q: Can I customise the firmware?
Yes — it’s fully open‑source.

Q: Should I pair it with an indoor monitor?
Yes — comparing indoor vs outdoor helps identify pollution sources.

Delivery & Returns

Order Confirmation

As soon as you place your order, you will receive an order confirmation e-mail. We will automatically reach out to our supplier to confirm that the item is in stock. We will process the charges to your credit or debit card if your item is in stock. 

Free Delivery On Orders Over £50

  • Dispatched directly from a supplier in the UK.
  • Order processing time: 1-2 business days.
  • Estimated delivery time: 1-2 business days.
  • Orders are not shipped or delivered on weekends or during public holidays. 
  • If we are experiencing a high volume of orders, shipments may be delayed by a few days.

Free Returns

Naturally, we hope you'll love your purchase, but it's OK to change your mind. Our return policy lasts 14 days. For complete information, please read our returns and refund policy.

Curious About Your Air Quality?

Rent a monitor for up to 4 weeks starting from £40, test your air and make informed choices!
  • Flexible rentals, choose your preferred 2-4 weeks.
  • Fast delivery, Evri Next Day delivery included.
  • Prepaid return label; drop at any Evri shop.
  • £80 deposit, refunded after the safe return.
  • Monitors PM2.5, PM10, CO2 (NDIR), temperature and humidity.
TEST MY AIR

FREE DELIVERY

Free delivery on orders above £50

14 DAYS FREE RETURNS

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