Estimates your cumulative inhaled PM2.5 from outdoor exposure only — walks, commutes and exercise — using live or historical official readings from Singapore's National Environment Agency (NEA via data.gov.sg).
1 · PM2.5 readings for the day
Fetch hourly regional measurements directly from NEA, or manually override cells if needed.
µg/m³ — the 24-hour regional average. Automatically calculated from NEA data or set manually.
2 · Outdoor trips & mask
Add each outdoor stint — every trip is matched to the NEA concentration recorded during that hour, adjusted for how hard you're breathing and any mask worn.