Howrah vs Tirunelveli
Side-by-side air quality comparison between Howrah and Tirunelveli.
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, Howrah averaged an AQI of 126 while Tirunelveli averaged 30 — a 96-point (320%) gap, with Howrah the more polluted and Tirunelveli the cleaner of the two. On 119 days when both cities reported, Tirunelveli was cleaner on 119 of them; the average daily gap was 126 AQI points.
Seasonality & days
Howrah peaks in December, while Tirunelveli peaks in October. Howrah logged 0.7% Severe days and 48.7% Good-or-Satisfactory days; Tirunelveli was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Howrah 120 days, Tirunelveli 31 days.
Year-over-year progress
The worst recorded day for Howrah reached AQI 500 at Ghusuri (WBPCB) on 2017-04-15; Tirunelveli hit AQI 42 at Municipal Corporation Office (TNPCB) on 2024-10-30.
Station-level disparity
Howrah spans 5 CPCB stations with a 116-point spread (min 111, max 227); Tirunelveli spans 1 stations with a 0-point spread (min 30, max 30).