Cuddalore vs Katihar
Side-by-side air quality comparison between Cuddalore 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 | Cuddalore | Katihar |
|---|---|---|
| PM2.5(µg/m³) | 13.10 | 109.20 |
| PM10(µg/m³) | 16.60 | 114.30 |
| NO₂(µg/m³) | 17.00 | 31.10 |
| SO₂(µg/m³) | 7.60 | 18.30 |
| O₃(µg/m³) | 36.00 | 43.00 |
| CO(µg/m³) | 507.00 | 770.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Cuddalore averaged an AQI of 52 while Katihar averaged 123 — a 71-point (137%) gap, with Katihar the more polluted and Cuddalore the cleaner of the two. On 249 days when both cities reported, Cuddalore was cleaner on 215 of them; the average daily gap was 68 AQI points.
Seasonality & days
Cuddalore peaks in January, while Katihar peaks in December. Cuddalore logged 0% Severe days and 90.6% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Cuddalore 34 days, Katihar 19 days.
Year-over-year progress
The worst recorded day for Cuddalore reached AQI 329 at Kudikadu (TNPCB) on 2024-04-05; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Cuddalore spans 2 CPCB stations with a 11-point spread (min 46, max 57); Katihar spans 1 stations with a 0-point spread (min 185, max 185).
Verdict
🏆 Cuddalore has better air quality with an AQI of 22 compared to Katihar's 264. That's a significant difference of 242 points.