Hisar vs Thrissur
Side-by-side air quality comparison between Hisar 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 | Hisar | Thrissur |
|---|---|---|
| PM2.5(µg/m³) | 75.00 | 8.60 |
| PM10(µg/m³) | 231.00 | 10.30 |
| NO₂(µg/m³) | 42.00 | 11.10 |
| SO₂(µg/m³) | 7.20 | 3.10 |
| O₃(µg/m³) | 25.00 | 23.00 |
| CO(µg/m³) | 573.00 | 153.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hisar averaged an AQI of 136 while Thrissur averaged 57 — a 79-point (139%) gap, with Hisar the more polluted and Thrissur the cleaner of the two. On 760 days when both cities reported, Thrissur was cleaner on 694 of them; the average daily gap was 117 AQI points.
Seasonality & days
Hisar peaks in November, while Thrissur peaks in February. Hisar logged 1.6% Severe days and 29.700000000000003% Good-or-Satisfactory days; Thrissur was 0% Severe and 88.4% Good-or-Satisfactory. Longest clean-air streaks: Hisar 34 days, Thrissur 52 days.
Year-over-year progress
Hisar has improved by 39 AQI points (22.3%) from 2019 to 2024; Thrissur has improved by 21 AQI points (26.9%) over the same window. The worst recorded day for Hisar reached AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02; Thrissur hit AQI 181 at Corporation Ground Thrissur (PCB) on 2023-01-09.
Station-level disparity
Hisar spans 1 CPCB stations with a 0-point spread (min 168, max 168); Thrissur spans 1 stations with a 0-point spread (min 68, max 68).
Verdict
🏆 Thrissur has better air quality with an AQI of 14 compared to Hisar's 187. That's a significant difference of 173 points.