Kolkata vs Tirupati
Side-by-side air quality comparison between Kolkata and Tirupati.
Live AQI from Open-Meteo CAMS (~45 km global model, updated hourly). Multi-year history from CPCB station data via aqinow.co pipeline (2016–2024, station-level daily records).
AQI Comparison
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kolkata averaged an AQI of 101 while Tirupati averaged 75 — a 26-point (35%) gap, with Kolkata the more polluted and Tirupati the cleaner of the two. On 261 days when both cities reported, Tirupati was cleaner on 212 of them; the average daily gap was 99 AQI points.
Seasonality & days
Kolkata peaks in January, while Tirupati peaks in April. Kolkata logged 1% Severe days and 47.800000000000004% Good-or-Satisfactory days; Tirupati was 0% Severe and 84% Good-or-Satisfactory. Longest clean-air streaks: Kolkata 75 days, Tirupati 36 days.
Year-over-year progress
Kolkata has improved by 76 AQI points (42.9%) from 2017 to 2024; Tirupati has improved by 20 AQI points (21.1%) over the same window. The worst recorded day for Kolkata reached AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23; Tirupati hit AQI 263 at Vaikuntapuram (APPCB) on 2022-11-16.
Station-level disparity
Kolkata spans 7 CPCB stations with a 56-point spread (min 95, max 151); Tirupati spans 1 stations with a 0-point spread (min 75, max 75).