Howrah vs Silchar
Side-by-side air quality comparison between Howrah and Silchar.
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 Silchar averaged 52 — a 74-point (142%) gap, with Howrah the more polluted and Silchar the cleaner of the two. On 352 days when both cities reported, Silchar was cleaner on 307 of them; the average daily gap was 99 AQI points.
Seasonality & days
Howrah peaks in December, while Silchar peaks in February. Howrah logged 0.7% Severe days and 48.7% Good-or-Satisfactory days; Silchar was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Howrah 120 days, Silchar 87 days.
Year-over-year progress
Howrah has improved by 32 AQI points (20.3%) from 2016 to 2024; Silchar has worsened by 11 AQI points (26.8%) over the same window. The worst recorded day for Howrah reached AQI 500 at Ghusuri (WBPCB) on 2017-04-15; Silchar hit AQI 89 at Tarapur (PCBA) on 2023-04-29.
Station-level disparity
Howrah spans 5 CPCB stations with a 116-point spread (min 111, max 227); Silchar spans 1 stations with a 0-point spread (min 47, max 47).