Seattle, WA · US EPA Air Quality Index · as of
Air quality for Seattle is not available right now.
Air quality for this location is not available right now.
Air data: Google Air Quality API, updated hourly. Index: US EPA Air Quality Index. Guidelines: WHO 2021 air quality guidelines.
The last seven days
| Day | Max | Average | Band |
|---|---|---|---|
| 2026-10-08 | 65 | 58 | Moderate |
| 2026-10-09 | 66 | 57 | Moderate |
| 2026-10-10 | 36 | 27 | Good |
| 2026-10-11 | 34 | 30 | Good |
| 2026-10-12 | 52 | 45 | Moderate |
| 2026-10-13 | 55 | 54 | Moderate |
| 2026-10-14 | 54 | 53 | Moderate |
Outdoor air comes indoors
Outdoor air comes indoors: studies find indoor PM2.5 tracks outdoor levels at roughly half to three-quarters of their concentration in homes without filtration.
US EPA, “Indoor Particulate Matter”, 2024
What the Sans Air Purifier is tested to capture
Independently tested on particles down to 0.3 µm, the size class of PM2.5 and smoke. These are the figures behind the claim.
- Particles ≥ 0.3 µm99.97%HEPA filtration standard
- Clean air delivery420 m³/hrCADR, Sans Air Purifier
- Coverage1,854 sq ftCleaned every hour
Figures are the laboratory’s own, measured under test conditions in a sealed chamber.