Katihar vs Kozhikode
Side-by-side air quality comparison between Katihar and Kozhikode.
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 | Kozhikode |
|---|---|---|
| PM2.5(µg/m³) | 109.20 | 4.60 |
| PM10(µg/m³) | 114.30 | 10.30 |
| NO₂(µg/m³) | 31.10 | 0.50 |
| SO₂(µg/m³) | 18.30 | 0.30 |
| O₃(µg/m³) | 43.00 | 64.00 |
| CO(µg/m³) | 770.00 | 217.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Katihar averaged an AQI of 123 while Kozhikode averaged 78 — a 45-point (58%) gap, with Katihar the more polluted and Kozhikode the cleaner of the two. On 348 days when both cities reported, Kozhikode was cleaner on 334 of them; the average daily gap was 169 AQI points.
Seasonality & days
Katihar peaks in December, while Kozhikode peaks in January. Katihar logged 3.1% Severe days and 26.9% Good-or-Satisfactory days; Kozhikode was 0.1% Severe and 99% Good-or-Satisfactory. Longest clean-air streaks: Katihar 19 days, Kozhikode 83 days.
Year-over-year progress
Katihar has improved by 188 AQI points (60.5%) from 2021 to 2024; Kozhikode has worsened by 29 AQI points (59.2%) over the same window. The worst recorded day for Katihar reached AQI 465 at Mirchaibari (BSPCB) on 2023-01-23; Kozhikode hit AQI 417 at Palayam Kozhikode (PCB) on 2021-01-25.
Station-level disparity
Katihar spans 1 CPCB stations with a 0-point spread (min 185, max 185); Kozhikode spans 1 stations with a 0-point spread (min 59, max 59).
Verdict
🏆 Kozhikode has better air quality with an AQI of 10 compared to Katihar's 264. That's a significant difference of 254 points.