REAL-TIME AIR POLLUTION MONITORING
Kolkata AQI Today
Live Air Quality Index (AQI), PM2.5, PM10, and atmospheric pollution levels for Kolkata, West Bengal. Calibrated to official CPCB and US EPA standards.
STATION COORDS: 22.5726° N, 88.3639° E•DATA SOURCE: CPCB / NOAA AIR SENSORS•HOURLY REAL-TIME UPDATE
🇮🇳 INDIAN CPCB NAQI STANDARDPRIMARY SCALE
211
Poor
Calculated using Central Pollution Control Board piecewise linear interpolation over PM2.5 and PM10 particulate concentrations.
PROMINENT POLLUTANT: PM2.5SCALE: 0 – 500
🇺🇸 US EPA STANDARD (2024 REVISED)GLOBAL BENCHMARK
178
Unhealthy
Calibrated with revised 2024 US EPA annual PM2.5 health thresholds for international environmental monitoring.
TARGET PM2.5: ≤ 9.0 µg/m³SCALE: 0 – 500
Kolkata Atmospheric Pollutant Breakdown
PM2.5 PARTICLES
93.8 µg/m³
Fine Respirable Matter
PM10 PARTICLES
105.2 µg/m³
Inhalable Dust / Ash
OZONE (O₃)
169 µg/m³
Surface Ground Ozone
NO₂ NITROGEN
14.7 µg/m³
Vehicular Exhaust
SO₂ SULPHUR
37.5 µg/m³
Industrial Emissions
CO CARBON
664 µg/m³
Combustion Byproduct
Health Advisory & Actionable Precautions for Kolkata
HEALTH IMPACT ASSESSMENT
Poor air quality. Can cause breathing discomfort on prolonged exposure. People with lung diseases and heart conditions should limit outdoor time.
MASK RECOMMENDATION
Consider wearing a mask during morning and evening rush hours.
INDOOR VENTILATION
Limit prolonged outdoor ventilation.