Indore vs Katihar
Side-by-side air quality comparison between Indore 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
Pollutant-level comparison (PM2.5, PM10, O3, NO2, SO2, CO)▾
| Pollutant | Indore | Katihar |
|---|---|---|
| PM2.5(µg/m³) | 32.60 | 109.20 |
| PM10(µg/m³) | 47.00 | 114.30 |
| NO₂(µg/m³) | 6.50 | 31.10 |
| SO₂(µg/m³) | 12.50 | 18.30 |
| O₃(µg/m³) | 74.00 | 43.00 |
| CO(µg/m³) | 254.00 | 770.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Indore averaged an AQI of 84 while Katihar averaged 123 — a 39-point (46%) gap, with Katihar the more polluted and Indore the cleaner of the two. On 635 days when both cities reported, Indore was cleaner on 410 of them; the average daily gap was 85 AQI points.
Seasonality & days
Indore peaks in November, while Katihar peaks in December. Indore logged 0% Severe days and 45.099999999999994% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Indore 65 days, Katihar 19 days.
Year-over-year progress
Indore has improved by 47 AQI points (35.9%) from 2019 to 2024; Katihar has improved by 188 AQI points (60.5%) over the same window. The worst recorded day for Indore reached AQI 359 at Maguda Nagar (IMC) on 2024-09-18; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Indore spans 6 CPCB stations with a 69-point spread (min 52, max 121); Katihar spans 1 stations with a 0-point spread (min 185, max 185).
Verdict
🏆 Indore has better air quality with an AQI of 55 compared to Katihar's 264. That's a significant difference of 209 points.