Haldia vs Thrissur
Side-by-side air quality comparison between Haldia and Thrissur.
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 | Haldia | Thrissur |
|---|---|---|
| PM2.5(µg/m³) | 34.10 | 7.20 |
| PM10(µg/m³) | 42.10 | 10.00 |
| NO₂(µg/m³) | 1.40 | 2.90 |
| SO₂(µg/m³) | 8.40 | 1.60 |
| O₃(µg/m³) | 155.00 | 58.00 |
| CO(µg/m³) | 283.00 | 109.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Haldia averaged an AQI of 90 while Thrissur averaged 57 — a 33-point (58%) gap, with Haldia the more polluted and Thrissur the cleaner of the two. On 590 days when both cities reported, Haldia was cleaner on 294 of them; the average daily gap was 42 AQI points.
Seasonality & days
Haldia peaks in December, while Thrissur peaks in February. Haldia logged 0% Severe days and 65.4% Good-or-Satisfactory days; Thrissur was 0% Severe and 88.4% Good-or-Satisfactory. Longest clean-air streaks: Haldia 51 days, Thrissur 52 days.
Year-over-year progress
Haldia has worsened by 8 AQI points (9.8%) from 2023 to 2024; Thrissur has improved by 21 AQI points (26.9%) over the same window. The worst recorded day for Haldia reached AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26; Thrissur hit AQI 181 at Corporation Ground Thrissur (PCB) on 2023-01-09.
Station-level disparity
Haldia spans 1 CPCB stations with a 0-point spread (min 86, max 86); Thrissur spans 1 stations with a 0-point spread (min 68, max 68).
Verdict
🏆 Thrissur has better air quality with an AQI of 12 compared to Haldia's 58.