Atmotube continuously monitors volatile organic compounds (VOCs) and particulate matter (PM). To simplify air quality assessment, we developed the Air Quality Score (AQS)—a single metric that provides an instant snapshot of the air you’re breathing.
How AQS Works
The AQS ranges from 0 (highly polluted air) to 100 (clean air). Based on this score, air quality is categorized as follows:
Good (81-100): Clean air with minimal pollution. No significant health risks.
Moderate (61-80): Generally acceptable air quality, though sensitive individuals may experience minor effects.
Polluted (41-60): Sensitive groups may notice health effects, but most people remain unaffected.
Very Polluted (21-40): Air quality begins to impact everyone, with increased risks for sensitive individuals.
Severely Polluted (0-20): Serious health effects for all; avoiding outdoor exertion is advised.
AQS Calculation Parameters
The AQS is determined using an internal algorithm that considers key pollutant levels.
The thresholds used for the calculation are:
State of Your Air | Air Quality Score | PM1 (ug/m³) | PM2.5 (ug/m³) | PM10 (ug/m³) | TVOC (ppm) |
Good | 81 - 100 | 0 - 14 | 0 - 20 | 0 - 30 | 0 - 0.3 |
Moderate | 61 - 80 | 14 - 34 | 20 - 50 | 30 - 75 | 0.3 - 1 |
Polluted | 41 - 60 | 34 - 61 | 50 - 90 | 75 - 125 | 1 - 2.5 |
Very Polluted | 21 - 40 | 61 - 95 | 90 - 140 | 125 - 200 | 2.5 - 5.5 |
Severely Polluted | 0 - 20 | 95 - 100 | 140 - 170 | 200 - 250 | >5.5 |
The AQS algorithm processes real-time sensor data to generate the score dynamically.
For those interested in the methodology behind the calculation, the algorithm is available as an open-source library at at this link.