Howrah vs Kozhikode
Side-by-side air quality comparison between Howrah 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 | Howrah | Kozhikode |
|---|---|---|
| PM2.5(µg/m³) | 64.70 | 4.30 |
| PM10(µg/m³) | 69.40 | 9.50 |
| NO₂(µg/m³) | 18.10 | 0.70 |
| SO₂(µg/m³) | 13.10 | 0.30 |
| O₃(µg/m³) | 86.00 | 64.00 |
| CO(µg/m³) | 421.00 | 171.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Howrah averaged an AQI of 126 while Kozhikode averaged 78 — a 48-point (62%) gap, with Howrah the more polluted and Kozhikode the cleaner of the two. On 944 days when both cities reported, Kozhikode was cleaner on 801 of them; the average daily gap was 99 AQI points.
Seasonality & days
Howrah peaks in December, while Kozhikode peaks in January. Howrah logged 0.7% Severe days and 48.7% Good-or-Satisfactory days; Kozhikode was 0.1% Severe and 99% Good-or-Satisfactory. Longest clean-air streaks: Howrah 120 days, Kozhikode 83 days.
Year-over-year progress
Howrah has improved by 32 AQI points (20.3%) from 2016 to 2024; Kozhikode has worsened by 29 AQI points (59.2%) over the same window. The worst recorded day for Howrah reached AQI 500 at Ghusuri (WBPCB) on 2017-04-15; Kozhikode hit AQI 417 at Palayam Kozhikode (PCB) on 2021-01-25.
Station-level disparity
Howrah spans 5 CPCB stations with a 116-point spread (min 111, max 227); 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 Howrah's 117. That's a significant difference of 107 points.