Device profile · Specifications & compatibility

AirGradient Open Air

Name: AirGradient Open Air
Brand: AirGradient

AirGradient · Air Quality Monitors · Model O-1PST

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AirGradient Open Air lists CO₂; PM2.5; TVOC.
Verify whether the value comes from a direct CO₂ sensor or an estimate; the field alone does not establish the measurement method.

Browse more from AirGradient or explore all air quality monitors in our catalog.

Recorded year: 2023
Recorded warranty: 1 year
Dimensions: 91.5 x 86.7 x 85 mm
Weight: 180g

The details that shape your choice

AirGradient Open Air Quick Features

Start with these specifications, then check the full details and conditions below.

All specifications →

CO₂: Yes; View details →
PM2.5: Yes; View details →
TVOC: Yes; View details →
Air Quality Alerts: Yes; View details →
Humidity Alerts: Yes; View details →
Temperature Alerts: Yes; View details →

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From specification to decision

AirGradient Open Air: Capabilities And Limitations

Based on listed specifications, not hands-on testing. Manufacturer sources are linked where checked.

What it offers

A Home Assistant integration is listed, providing an integration path to verify for the exact model. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities.
View Home Assistant details →
Temperature alerts are recorded as an automation or notification option. Check configurable thresholds, notification routes and any hub requirement.
View Temperature Alerts details →

What to consider

Matter is listed as unsupported; check another documented integration if Matter is essential to your setup.
View Matter details →
Apple Home support is listed as unavailable; do not assume the device appears directly in Apple Home.
View Apple Home details →
A screen is listed as unavailable; check how information is accessed instead.
View Screen details →

Still needs verification

Confirm these details if they matter to your setup.

battery life: Not applicable / unspecified →
low battery alerts: Not applicable / unspecified →
screen size: Not applicable / unspecified →
touch screen: Not applicable / unspecified →

About our sources and comparison method →

Questions About AirGradient Open Air

What is the CO₂ capability of AirGradient Open Air?

CO₂ sensing is listed. Open Air temperature and humidity need correction and may differ from ambient values. Verify whether the value comes from a direct CO₂ sensor or an estimate; the field alone does not establish the measurement method.

Source: AirGradient O-1PST product specifications · Checked 2026-10-04

View CO₂ specifications →

Does AirGradient Open Air support a PM2.5 measurement?

PM2.5 sensing is listed. Open Air temperature and humidity need correction and may differ from ambient values. Check measurement units, sensor specifications and calibration; a recorded sensor flag does not establish accuracy.

Source: AirGradient O-1PST product specifications · Checked 2026-10-04

View PM2.5 specifications →

Does AirGradient Open Air support a TVOC measurement?

TVOC sensing is listed. Open Air temperature and humidity need correction and may differ from ambient values. Check the sensor method and how the reading is reported; do not equate a TVOC estimate with a CO₂ measurement.

Source: AirGradient O-1PST product specifications · Checked 2026-10-04

View TVOC specifications →

Does AirGradient Open Air support Matter?

No, according to the listed specifications. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity.

View Matter specifications →

Does AirGradient Open Air work with Home Assistant?

Yes, according to the listed specifications. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities.

View Home Assistant specifications →

Explore the full picture

AirGradient Open Air Specifications

Recorded catalog values. Expand notes for qualifications; unknown values are not treated as missing features.

6 of 46 fields matched to manufacturer documentation. Source checks apply only to the named model and stated scope. Other fields remain catalog data. How we verify specifications →

Sensors17 fields

Sensors specifications
TVOC	Yes Manufacturer source TVOC sensing is listed. AirGradient O-1PST product specifications → Source section Product description; Technical specifications Model O-1PST Region Manufacturer global product page; no regional restriction stated for these fields Firmware Not specified by this source Checked 2026-10-04 Open Air temperature and humidity need correction and may differ from ambient values. Document check only; not a hands-on test or verification of every regional or firmware variant.
Pm01	No
Pm03	Yes
Pm1	Yes
PM2.5	Yes Manufacturer source PM2.5 sensing is listed. AirGradient O-1PST product specifications → Source section Product description; Technical specifications Model O-1PST Region Manufacturer global product page; no regional restriction stated for these fields Firmware Not specified by this source Checked 2026-10-04 Open Air temperature and humidity need correction and may differ from ambient values. Document check only; not a hands-on test or verification of every regional or firmware variant.
Pm10	Yes
Co	No
CO₂	Yes Manufacturer source CO₂ sensing is listed. AirGradient O-1PST product specifications → Source section Product description; Technical specifications Model O-1PST Region Manufacturer global product page; no regional restriction stated for these fields Firmware Not specified by this source Checked 2026-10-04 Open Air temperature and humidity need correction and may differ from ambient values. Document check only; not a hands-on test or verification of every regional or firmware variant.
Nox	Yes Manufacturer source NOx sensing is listed. AirGradient O-1PST product specifications → Source section Product description; Technical specifications Model O-1PST Region Manufacturer global product page; no regional restriction stated for these fields Firmware Not specified by this source Checked 2026-10-04 Open Air temperature and humidity need correction and may differ from ambient values. Document check only; not a hands-on test or verification of every regional or firmware variant.
Radon	No
Temperature	Yes Manufacturer source Temperature sensing is listed. AirGradient O-1PST product specifications → Source section Product description; Technical specifications Model O-1PST Region Manufacturer global product page; no regional restriction stated for these fields Firmware Not specified by this source Checked 2026-10-04 Open Air temperature and humidity need correction and may differ from ambient values. Document check only; not a hands-on test or verification of every regional or firmware variant.
Humidity	Yes Manufacturer source Humidity sensing is listed. AirGradient O-1PST product specifications → Source section Product description; Technical specifications Model O-1PST Region Manufacturer global product page; no regional restriction stated for these fields Firmware Not specified by this source Checked 2026-10-04 Open Air temperature and humidity need correction and may differ from ambient values. Document check only; not a hands-on test or verification of every regional or firmware variant.
Atmospheric Pressure	No
Ambient Light	No
Uv	No
Occupancy	No
Ambient Noise	No

Alerts4 fields

Alerts specifications
Temperature Alerts	Yes
Humidity Alerts	Yes
Air Quality Alerts	Yes
Low Battery Alerts	Not applicable / unspecified

Connectivity8 fields

Connectivity specifications
2.4 GHz Wi-Fi	Yes Details & conditions 2.4GHz IEEE 802.11 b/g/n-compliant
5 GHz Wi-Fi	No
Ethernet	No
Bluetooth	Yes
Z Wave	No
Zigbee	No
Thread	No
Other	No

Display6 fields

Display specifications
Screen	No
Screen Type	Not applicable / unspecified
Color Screen	Not applicable / unspecified
Touch Screen	Not applicable / unspecified
Screen Size	Not applicable / unspecified
Screen Resolution	Not applicable / unspecified

Features2 fields

Features specifications
Automations	Yes
History Records	Yes

Integrations6 fields

Integrations specifications
Google Home	No
Alexa	No Details & conditions AirGradient is a local, open source monitor read over MQTT or its own dashboard; it publishes no Alexa skill
Apple Home	No
SmartThings	No
Home Assistant	Yes
Matter	No

Power3 fields

Power specifications
Wired	USB-C
Battery Type	Not applicable / unspecified
Battery Life	Not applicable / unspecified

Category ComparisonSee how these fields vary across air quality monitors Reading SpecificationsCheck units, conditions and specification limits

How this device compares

AirGradient Open Air vs Other Similar Models

Statistical context from 32 air quality monitors in this catalog. These figures describe our recorded data, not independent measurements.

Recorded feature coverage

Nox: 2 of 32 known answers are Yes

Sensors: 6% among explicit Yes/No answers; 0 of 32 devices have no resolved answer. Check the specifications for this model’s conditions.

Recorded feature coverage

Pm03: 2 of 32 known answers are Yes

Sensors: 6% among explicit Yes/No answers; 0 of 32 devices have no resolved answer. Check the specifications for this model’s conditions.

Recorded feature coverage

Pm1: 4 of 32 known answers are Yes

Sensors: 13% among explicit Yes/No answers; 0 of 32 devices have no resolved answer. Check the specifications for this model’s conditions.

Brand representation in this directory

2 of 32 models are from AirGradient

Counts air quality monitors listed here, not sales or market share. Catalog inclusion does not imply a recommendation.

How These Figures Are CalculatedLearn about our catalog statistics methodology

What Should You Verify Before Buying AirGradient Open Air?

These checks describe air quality monitors requirements. Confirm each one against the exact model’s current manufacturer documentation and your installation.

List the actual sensors and distinguish measured values from estimates.
Check measurement units, calibration and stated accuracy.
Verify data history, export and alert options.
Confirm which readings your automation platform can access.

Verify compatibility beyond a protocol label →Check accounts, accessories and installation requirements →Check update support and data deletion before choosing →

Side-by-side specification comparison

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Catalog specifications have not all been independently checked against manufacturer sources. Read our data and evidence methodology.