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sci.air-quality-index Calculator
Calculates the Air Quality Index (AQI) from pollutant concentrations (PM2.5, PM10, O₃, NO₂, SO₂, CO) using EPA breakpoint tables. AQI 0–50 is Good; 151–200 is Unhealthy — PM2.5 is typically the dominant driver of AQI exceedances in urban areas.
Inputs
Pm25 Ugm3
Reference formula or conversion factor shown for context.
Pm10 Ugm3
Reference formula or conversion factor shown for context.
O3 Ppb
Reference formula or conversion factor shown for context.
No2 Ppb
Reference formula or conversion factor shown for context.
Results
AQI (PM2.5 based)
Reference formula or conversion factor shown for context.
category
The classification bucket this result falls into based on the computed value and the applicable reference scale.
PM2.5
Reference formula or conversion factor shown for context.
PM10
Reference formula or conversion factor shown for context.
O₃
Reference formula or conversion factor shown for context.