IEQ InSight

IEQ InSight Hotel Air Quality Explorer

Measured during real hotel stays

Hotel Air Quality Explorer

You can see the room. What do you know about the air?

Explore sleep-period CO₂ and fine-particle measurements, one guestroom night at a time. Results describe the monitored space and observation period.

HotelLocationMonitoredNightOccupantsMean CO₂ (ppm)Mean PM₂.₅ (µg/m³)Sleep-period air quadrant
Park Central NYCNew York, USASep 2026119682.10Higher CO₂ – Low particles
Park Central NYCNew York, USASep 2026219002.29Higher CO₂ – Low particles
Courtyard by MarriottNewark, New Jersey, USASep 20261111080.97Higher CO₂ – Low particles
Courtyard by MarriottNewark, New Jersey, USASep 20262115303.67Higher CO₂ – Low particles
Fresh & cleanCO₂ ≤800 ppm
PM₂.₅ ≤15 µg/m³
Higher CO₂ – Low particlesCO₂ >800 ppm
PM₂.₅ ≤15 µg/m³
Lower CO₂ – Higher particlesCO₂ ≤800 ppm
PM₂.₅ >15 µg/m³
Higher CO₂ – Higher particlesCO₂ >800 ppm
PM₂.₅ >15 µg/m³
How to read these measurements

Each row is one monitored night. The quadrant uses the nightly mean CO₂ and PM₂.₅ as its coordinates. A mean does not describe every moment of the night. These are IEQ InSight categories using selected reference lines, not official AQI categories, hotel certifications, or measurements of sleep quality.

The 15 µg/m³ particle line is used here as an overnight comparison reference; an overnight mean is not a 24-hour average. Hotel, occupancy, season, instrument, and monitoring duration can affect comparisons.

The initial four entries were collected in September 2026 using an AirGradient ONE at one-minute intervals, with one occupant. Exact sleep-window times were not supplied in the summary dataset.

Detailed findings, charts, and academic work are available on Research & Publications.

IEQ InSight · Visualizing the invisible.