AirGradient Open Air Monitor
For more info on end price, please refer to our FAQs
The open air (Model O-1PST) is an outdoor air quality monitor that checks whether the air quality is healthy.
Key Features:
- Measures PM1, PM2.5, PM10, CO2, TVOCs, NOx, temperature, and humidity
- Weatherproof enclosure
- Can be mounted on walls
- Fully open-source code for easy customisation
- 12-month warranty
- Certifications: CE, RoHS, REACH, FCC
The delivery and support are direct from Air Gradient.
Description
The open air is one of the first low-cost outdoor air quality monitors to include a CO2 sensor, enabling the detection of local emission sources that may not produce visible particulate matter.
Comprehensive monitoring with eight metrics
The open air monitor provides comprehensive air quality insights by measuring PM1, PM2.5, PM10, CO2, TVOCs, NOx, temperature, and humidity using the Plantower PMS5003T sensor, the SenseAir S8, the Sensirion SGP41 sensors, and more.

Flexible data usage and open source connectivity
The open air monitor offers unparalleled flexibility and allows you to connect your air quality data to any server, such as home assistant or the AirGradient data platform. You can benefit from real-time air quality insights, alerts, detailed reports, and the option to share outdoor data with OpenAQ.

Easy to mount on the walls
This open air monitor is weatherproof and can be securely mounted on walls or poles using screws or stainless-steel zip ties, with an additional secure screw to prevent theft.

Customisable durable enclosure design
Constructed with premium UV-protected ASA plastic, the open air monitor ensures durability and accurate air quality measurement, maintaining optimal airflow and minimising condensation risk.
As an open-source monitor, you can adjust easily by making changes and additions to the firmware and hardware.


Best paired with an indoor monitor
To fully understand your environment's air quality, we recommend monitoring both indoor and outdoor air. This approach provides valuable insights into pollution sources, ventilation effectiveness, and allows for comparative reports on air quality.
Learn more about our indoor air monitor.

AirGradient - FAQ's
Why aren’t you selling this?
At the moment, we are affiliated with AirGradient and do not currently plan to sell directly through our website. However, it may be available for direct purchase in the future.
Why is the price in dollars?
The price is listed in dollars because AirGradient are using a global pricing system.
Is this the end price?
There will be standard shipping charges $25 as well, depending on the delivery country. Apart from this, air monitor is subject to import tax, which varies depending on the country and you may need to pay once its arrive in your country.
What is the shipping time?
AirGradient monitor commits to ship within ten working days.
Technical Specs
| Brand | AirGrandient |
|---|---|
| Your Purchase Includes | Includes 1 × Monitor, adhesive hook, charging cable, user manual |
| Colour | White and Blue |
| Dimensions L × W × H | 90 x 80 x 80 (mm) |
| Weight | 195 (g) |
| Ranges | PM1: 0 ~ 500 μg/m³ |
| Power Supply | >2A / USB-C cable |
| Bluetooth | Bluetooth 5.0 / Bluetooth Mesh |
| Metrics x8 | PM1, PM2.5, PM10, CO2, TVOCs, NOX, Temperature, Humidity. |
| Network | Wi-Fi 2.4GHz |
| Warranty | 1 year |
| Certification | CE, RoHS, REACH, FCC |
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