Katihar vs Surat
Side-by-side air quality comparison between Katihar and Surat.
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, Katihar averaged an AQI of 123 while Surat averaged 83 — a 40-point (48%) gap, with Katihar the more polluted and Surat the cleaner of the two. On 525 days when both cities reported, Surat was cleaner on 405 of them; the average daily gap was 94 AQI points.
Seasonality & days
Katihar peaks in December, while Surat peaks in November. Katihar logged 3.1% Severe days and 26.9% Good-or-Satisfactory days; Surat was 0% Severe and 55.9% Good-or-Satisfactory. Longest clean-air streaks: Katihar 19 days, Surat 55 days.
Year-over-year progress
Katihar has improved by 188 AQI points (60.5%) from 2021 to 2024; Surat has improved by 139 AQI points (62.6%) over the same window. The worst recorded day for Katihar reached AQI 465 at Mirchaibari (BSPCB) on 2023-01-23; Surat hit AQI 384 at Science Center (SMC) on 2023-08-19.
Station-level disparity
Katihar spans 1 CPCB stations with a 0-point spread (min 185, max 185); Surat spans 1 stations with a 0-point spread (min 123, max 123).