Howrah vs Prayagraj
Side-by-side air quality comparison between Howrah and Prayagraj.
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 Prayagraj averaged 80 — a 46-point (57%) gap, with Howrah the more polluted and Prayagraj the cleaner of the two. On 938 days when both cities reported, Prayagraj was cleaner on 535 of them; the average daily gap was 74 AQI points.
Seasonality & days
Howrah peaks in December, while Prayagraj peaks in November. Howrah logged 0.7% Severe days and 48.7% Good-or-Satisfactory days; Prayagraj was 0.2% Severe and 48% Good-or-Satisfactory. Longest clean-air streaks: Howrah 120 days, Prayagraj 69 days.
Year-over-year progress
Howrah has improved by 32 AQI points (20.3%) from 2016 to 2024; Prayagraj has improved by 42 AQI points (34.4%) over the same window. The worst recorded day for Howrah reached AQI 500 at Ghusuri (WBPCB) on 2017-04-15; Prayagraj hit AQI 416 at Nagar Nigam (UPPCB) on 2021-11-08.
Station-level disparity
Howrah spans 5 CPCB stations with a 116-point spread (min 111, max 227); Prayagraj spans 3 stations with a 9-point spread (min 96, max 105).