Chennai vs Hajipur
Side-by-side air quality comparison between Chennai and Hajipur.
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, Chennai averaged an AQI of 68 while Hajipur averaged 173 — a 105-point (154%) gap, with Hajipur the more polluted and Chennai the cleaner of the two. On 1255 days when both cities reported, Chennai was cleaner on 815 of them; the average daily gap was 75 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Hajipur was 0.3% Severe and 36.6% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Hajipur 36 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Hajipur has worsened by 74 AQI points (74.7%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Hajipur hit AQI 427 at Industrial Area (BSPCB) on 2024-11-12.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Hajipur spans 1 stations with a 0-point spread (min 149, max 149).