Cuddalore vs Hapur
Side-by-side air quality comparison between Cuddalore and Hapur.
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 | Hapur |
|---|---|---|
| PM2.5(µg/m³) | 13.10 | 71.90 |
| PM10(µg/m³) | 16.60 | 97.30 |
| NO₂(µg/m³) | 17.00 | 36.60 |
| SO₂(µg/m³) | 7.60 | 11.50 |
| O₃(µg/m³) | 36.00 | 36.00 |
| CO(µg/m³) | 507.00 | 589.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Cuddalore averaged an AQI of 52 while Hapur averaged 142 — a 90-point (173%) gap, with Hapur the more polluted and Cuddalore the cleaner of the two. On 307 days when both cities reported, Cuddalore was cleaner on 277 of them; the average daily gap was 89 AQI points.
Seasonality & days
Cuddalore peaks in January, while Hapur peaks in November. Cuddalore logged 0% Severe days and 90.6% Good-or-Satisfactory days; Hapur was 1.9% Severe and 36.2% Good-or-Satisfactory. Longest clean-air streaks: Cuddalore 34 days, Hapur 55 days.
Year-over-year progress
The worst recorded day for Cuddalore reached AQI 329 at Kudikadu (TNPCB) on 2024-04-05; Hapur hit AQI 477 at Anand Vihar (UPPCB) on 2019-10-31.
Station-level disparity
Cuddalore spans 2 CPCB stations with a 11-point spread (min 46, max 57); Hapur spans 1 stations with a 0-point spread (min 159, max 159).
Verdict
🏆 Cuddalore has better air quality with an AQI of 22 compared to Hapur's 140. That's a significant difference of 118 points.