Review: Atmotube PRO2 – From Consumer Gadget to Citizen Science Instrument

Sotirios PapathanasiouLeave a comment

The Atmotube PRO2 marks a significant evolution in the world of personal air quality monitors (PAQMs). While it retains the rugged, familiar aesthetic of the original Atmotube PRO, the internal upgrades transform it from a consumer gadget into a serious scientific tool. Having put this device through a rigorous “field test”, it is clear that ATMO has listened to the research community to solve the most nagging pain points of the first generation.

Technical Specifications: A Scientist’s Toolkit

Here is the breakdown of the sensor suite:

  • PM sensor for PM1, PM2.5, PM10, and PCN0.5 (Sensirion SPS30)
  • NOx and TVOC sensor (Sensirion SGP41)
  • Temperature, Humidity (Sensirion SHT40-AD1B)
  • Air Pressure (Infineon DPS310)
  • CO2 sensor (Sensirion STCC4)
  • Built-in GPS (Allystar TAU1113) and Accelerometer (MiraMEMS da213B)
  • USB-C data access Sync history data with multiple devices
  • Memory size 16MB
  • Battery Li-Po 2300 mAh
  • Bluetooth 5.0
  • Weight: 106 g (3.7 oz)
  • Dimensions (H × W × D): 86 x 50 x 22 mm (3.4 x 2 x 0.9 in)

Something important to keep in mind as I found evidence that the device can measure PCN0.5 particle bin. If in the future the Atmotube PRO2 provides a precise particle count for the submicron fraction, which aligning with Global Open Air Quality Standards (GO AQS) recommendations to move beyond standard PM2.5 monitoring, this is crucial because traditional mass concentration (μg/m3) often fails to capture the significant health impacts of these tiny submicron particles.

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Bridging the Gap: AirGradient and GO AQS Announce Webinar on the Future of Indoor Air Quality Standards

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As the global conversation around indoor air quality (IAQ) intensifies, the industry is moving toward a critical realization: data is only as good as our ability to understand it. Currently, the world of air quality monitoring is often fragmented, with different manufacturers and regions using varying metrics, languages, and benchmarks.

To address this challenge, we are thrilled to announce that AirGradient organized a special upcoming AirGradient Forum featuring the Global Open Air Quality Standards (GO AQS), alongside AirGradient.

Moving Toward a Unified Language

The centerpiece of this discussion will be the practical application of the GO IAQS Score. Developed to move away from fragmented communication, the GO IAQS methodology aims to provide a unified benchmark that allows for global understanding across diverse indoor environments—from classrooms in Bangkok to offices in Dublin.

During the session, Sotirios Papathanasiou and Achim Haug will take a deep dive into the strategic decisions made during the development of these standards. They will address one of the most significant challenges in the field: how to balance complex, high-resolution sensor data with the need for a simplified, actionable output that everyday users can trust and act upon.

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The Silent Lifeline of IoT: Why Compression is the Future of Air Quality Monitoring

Sotirios PapathanasiouLeave a comment

For years, the Internet of Things (IoT) conversation has been dominated by sensors, cloud platforms, and the flashier world of AI analytics. While AI remains the current “buzzword,” the reality is that millions of IoT devices are already quietly working in the background, providing the essential sensor data that powers our modern world. However, as these deployments mature and scale, a critical bottleneck has emerged: the cost and physical limits of data transmission.

In my experience with Air Quality Monitoring (AQM) solutions, I’ve seen this play out repeatedly. Projects often aim to transmit high-frequency, continuous air quality measurements over long distances, only to hit a wall. Whether it’s the strict payload size limits of LoRaWAN or the spiraling costs of high-frequency transmissions over LTE/NB-IoT, the “raw data” approach is no longer sustainable.

The Problem with “Raw” Transmission

Most IoT data, especially from air quality sensors, is highly structured and repetitive. Devices often transmit variations of the same environmental measurements over and over. Sending this information raw ignores a simple reality: transmission is expensive, not just in terms of data plans, but in battery life, maintenance, and long-term operational costs.

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Field Review: nanoDUST AirPN10 — The Next Generation of Nanoparticle Monitoring

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The landscape of air quality monitoring is shifting. For years, the focus remained on PM2.5 and PM10 (mass concentration), but we are increasingly realizing that the most dangerous threats are the ones we can’t weigh. Ultrafine particles (UFPs), or nanoparticles, are so small they penetrate deep into the bloodstream, yet they often escape traditional sensors and regulatory implementations.

Enter the nanoDUST AirPN10. Designed as a “Plug & Play” solution for monitoring these invisible threats, it promises to bring lab-grade accuracy to the field without the logistical headaches of traditional counters.

Technical Specifications

The nanoDUST AirPN10 is built for high-precision air monitoring. Its standout feature is its independence from working fluids, unlike Condensation Particle Counters (CPC) that require constant refills of butanol or water.

  • Measurement Range: 1,000 to 500,000 particles/cm³
  • Lower Detection Limit: D50 at 10 nm
  • Technology: Advanced Diffusion Charging (ADC)
  • Aerosol Handling: Integrated Aerosol Switching Technology (AST) for solid vs. volatile separation.
  • Weight: ∼9 kg
  • Connectivity: LTE (Cloud), LAN (Ethernet), and USB.
  • Durability: Weatherproofed for outdoor use (when not using the rear USB port).
  • Power Consumption: Typically <100 W
  • Ingress Protection: IP55 Weatherproof
  • Sample Inlet: PM10 Sampling Head
  • Calibration Aerosol: Soot
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How Small Changes to your Daily Routine Could Make a Big Difference to your Exposure to Air Pollution

Sotirios PapathanasiouLeave a comment

We often think of air pollution as something that happens “out there”, smoggy skylines and exhaust fumes. However, for many of us, the most polluted air we breathe is actually inside our own homes. The good news? You don’t need a massive renovation to fix it. A few strategic changes to your daily habits can drastically reduce your exposure to harmful particulates and chemicals.

1. Master the Kitchen: Your Primary Pollution Zone

Cooking is frequently the #1 source of high particulate matter (PM2.5) indoors. Frying, searing, and even boiling on gas stoves release combustion byproducts and grease particles into your breathing zone.

  • The Fix: Always use your range hood on its highest effective setting. If your hood doesn’t vent outside (recirculating), open a nearby window to create cross-ventilation.
  • The Tip: Start the fan before you turn on the heat and leave it running for five minutes after you finish.
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AirSpot Review: The Wearable CO2 Monitor That Delivers Real-Time Clarity

Sotirios Papathanasiou1 Comment

The world of air quality monitoring has long been dominated by bulky, desk-bound units. The AirSpot, a revolutionary small CO2 monitor, shatters that paradigm. Given to me by the CEO of The Safer Air Project, this device is not just a monitor—it’s a truly wearable environmental sensor that brings crucial air quality data right to your wrist or backpack.

Design, Portability, and Hardware

The AirSpot’s most immediate selling point is its diminutive size and featherlight weight. Measuring a mere 3.6cm x 4.8cm x 1.15cm and weighing only 17g (0.6 ounces), it is, to my recollection, the smallest CO2 monitor currently available. This size isn’t just a gimmick; it’s the foundation of its usability.

The device’s true genius lies in its ecosystem of accessories. AirSpot is unique in offering a wide range of mounting options, including a wristband that makes it genuinely wearable. I personally prefer the carabiner-style key ring case, which allowed me to easily clip it onto my backpack or belt—perfect for on-the-go monitoring.

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Beyond the Gamification: Why 2026 Demands Empathetic AI for Air Quality

Sotirios Papathanasiou1 Comment

In previous articles, I advocated for a “Tamagotchi-like” approach to air quality awareness, a gamified solution designed to capture the public’s attention. At the time, the goal was simple: engagement. If we could make checking air quality as addictive as feeding a digital pet, we could encourage better habits.

But the world of 2026 is different. Attention is no longer enough; we need connection. While gamification served its purpose, it is time to evolve. We must transition from simple reward systems to AI systems embedded with empathy-based sensor technology.

We need devices that don’t just beep when the air is bad, but devices that feel the environment with us.

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Year in Review 2025 🔁 2️⃣0️⃣2️⃣5️⃣

Sotirios Papathanasiou1 Comment

As 2025 draws to a close, it’s a moment for reflection and gratitude here at www.seetheair.org. This year, our journey to champion better air quality, both indoors and outdoors, has reached new and exciting heights.

While I published slightly fewer articles than in the previous year, the commitment of our readership remained incredibly strong. I’m thrilled to report that our total visits for the year held nearly steady, hitting an impressive 209,000 visits! It’s a powerful testament to the value of dedicated content and your unwavering interest in the air we breathe.

A Historic Shift in Global Reach

The most striking development of 2025 was a monumental shift in our global audience. For the first time ever, in the last three months of the year, visits from China have absolutely skyrocketed, replacing the USA as the number one country to visit the blog.

This surge appears to be a very organic and powerful movement. We see constant, daily visits, but no specific referring site to credit. A huge welcome to all our new readers in China—your engagement is truly inspiring!

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Why Lung Cancer Is on the Rise in Non-Smokers

Sotirios Papathanasiou1 Comment

Still a mystery, but here is what we have found so far. While the overall rate of lung cancer has been declining, a notable trend has emerged: lung cancer in people who have never smoked is increasing. This poses a challenge to the traditional understanding of the disease, which is heavily associated with tobacco use. Research suggests that for some, lung cancer in non-smokers is a distinct disease from that in smokers, driven by different factors and presenting in a different form.

Environmental and Lifestyle Factors

A major contributing factor to lung cancer in non-smokers is exposure to environmental carcinogens.

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Review: AirGradient Open Air

Sotirios PapathanasiouLeave a comment

Having had the opportunity to get the AirGradient Open Air (Model O-1PST) at the ASIC 2025 conference in Thailand, complete with its unique engraving, I’ve spent some time with this device, and it’s clear that AirGradient is pushing the boundaries of accessible and reliable outdoor air quality monitoring. This device presents a compelling alternative to existing solutions, particularly for those seeking transparency and robust performance.

Technical Specifications O-1PST

  • WiFi 2.4GHz IEEE 802.11 b/g/n-compliant
  • Bluetooth LE: Bluetooth 5, Bluetooth mesh
  • Status LED
  • Plantower PMS5003T for PM2.5 + ENS210 for T/RH
  • SenseAir S8/S88 CO2 NDIR Sensor
  • Sensirion SGP41 TVOC/NOX Module
  • Enclosure: ASA Plastic, UV Resistant and Weather Proof
  • Mounting Options: Wall or pole mounting options
  • 4m USB-C to USB-A Cable
  • USB-C Power Connector 2A/5V
  • Certifications: CE, RoHS, REACH, FCC

Sensor Selection: A Thoughtful Approach

The Open Air features a well-considered suite of sensors designed for accurate and insightful data. For PM2.5 measurements, it utilizes the Plantower PMS5003T, a sensor known for its reliability and found in other popular monitors like the PurpleAir (though it’s important to note the PMS5003T is a similar but not identical variant).

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