Katihar vs Madurai
Side-by-side air quality comparison between Katihar and Madurai.
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 | Katihar | Madurai |
|---|---|---|
| PM2.5(µg/m³) | 105.90 | 15.50 |
| PM10(µg/m³) | 109.00 | 16.70 |
| NO₂(µg/m³) | 25.20 | 19.40 |
| SO₂(µg/m³) | 20.10 | 4.80 |
| O₃(µg/m³) | 67.00 | 20.00 |
| CO(µg/m³) | 727.00 | 212.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Katihar averaged an AQI of 123 while Madurai averaged 48 — a 75-point (156%) gap, with Katihar the more polluted and Madurai the cleaner of the two. On 65 days when both cities reported, Madurai was cleaner on 65 of them; the average daily gap was 126 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Katihar logged 3.1% Severe days and 26.9% Good-or-Satisfactory days; Madurai was 0% Severe and 98.7% Good-or-Satisfactory. Longest clean-air streaks: Katihar 19 days, Madurai 17 days.
Year-over-year progress
The worst recorded day for Katihar reached AQI 465 at Mirchaibari (BSPCB) on 2023-01-23; Madurai hit AQI 105 at Uchapatti (TNPCB) on 2024-11-26.
Station-level disparity
Katihar spans 1 CPCB stations with a 0-point spread (min 185, max 185); Madurai spans 1 stations with a 0-point spread (min 48, max 48).
Verdict
🏆 Madurai has better air quality with an AQI of 26 compared to Katihar's 253. That's a significant difference of 227 points.