Delhi vs Katihar
Side-by-side air quality comparison between Delhi and Katihar.
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, Delhi averaged an AQI of 210 while Katihar averaged 123 — a 87-point (71%) gap, with Delhi the more polluted and Katihar the cleaner of the two. On 974 days when both cities reported, Katihar was cleaner on 871 of them; the average daily gap was 130 AQI points.
Seasonality & days
Delhi peaks in November, while Katihar peaks in December. Delhi logged 18.7% Severe days and 1.7% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Delhi 3 days, Katihar 19 days.
Year-over-year progress
Delhi has improved by 42 AQI points (16.7%) from 2016 to 2024; Katihar has improved by 188 AQI points (60.5%) over the same window. The worst recorded day for Delhi reached AQI 500 at Ashok Vihar (DPCC) on 2024-11-18; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Delhi spans 39 CPCB stations with a 84-point spread (min 178, max 262); Katihar spans 1 stations with a 0-point spread (min 185, max 185).