Cuddalore vs Kalyān
Side-by-side air quality comparison between Cuddalore and Kalyān.
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 | Kalyān |
|---|---|---|
| PM2.5(µg/m³) | 15.00 | 23.70 |
| PM10(µg/m³) | 18.20 | 40.90 |
| NO₂(µg/m³) | 15.90 | 20.60 |
| SO₂(µg/m³) | 10.00 | 23.00 |
| O₃(µg/m³) | 39.00 | 23.00 |
| CO(µg/m³) | 353.00 | 186.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Cuddalore averaged an AQI of 52 while Kalyān averaged 95 — a 43-point (83%) gap, with Kalyān the more polluted and Cuddalore the cleaner of the two. On 318 days when both cities reported, Cuddalore was cleaner on 282 of them; the average daily gap was 52 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Cuddalore logged 0% Severe days and 90.6% Good-or-Satisfactory days; Kalyān was 0.1% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Cuddalore 34 days, Kalyān 78 days.
Year-over-year progress
The worst recorded day for Cuddalore reached AQI 329 at Kudikadu (TNPCB) on 2024-04-05; Kalyān hit AQI 414 at Khadakpada (MPCB) on 2022-01-24.
Station-level disparity
Cuddalore spans 2 CPCB stations with a 11-point spread (min 46, max 57); Kalyān spans 2 stations with a 18-point spread (min 98, max 116).
Verdict
🏆 Cuddalore has better air quality with an AQI of 25 compared to Kalyān's 41.