Cuddalore vs Howrah
Side-by-side air quality comparison between Cuddalore and Howrah.
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 | Howrah |
|---|---|---|
| PM2.5(µg/m³) | 15.00 | 64.70 |
| PM10(µg/m³) | 18.20 | 69.40 |
| NO₂(µg/m³) | 15.90 | 18.10 |
| SO₂(µg/m³) | 10.00 | 13.10 |
| O₃(µg/m³) | 39.00 | 86.00 |
| CO(µg/m³) | 353.00 | 421.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Cuddalore averaged an AQI of 52 while Howrah averaged 126 — a 74-point (142%) gap, with Howrah the more polluted and Cuddalore the cleaner of the two. On 319 days when both cities reported, Cuddalore was cleaner on 294 of them; the average daily gap was 90 AQI points.
Seasonality & days
Cuddalore peaks in January, while Howrah peaks in December. Cuddalore logged 0% Severe days and 90.6% Good-or-Satisfactory days; Howrah was 0.7% Severe and 48.7% Good-or-Satisfactory. Longest clean-air streaks: Cuddalore 34 days, Howrah 120 days.
Year-over-year progress
The worst recorded day for Cuddalore reached AQI 329 at Kudikadu (TNPCB) on 2024-04-05; Howrah hit AQI 500 at Ghusuri (WBPCB) on 2017-04-15.
Station-level disparity
Cuddalore spans 2 CPCB stations with a 11-point spread (min 46, max 57); Howrah spans 5 stations with a 116-point spread (min 111, max 227).
Verdict
🏆 Cuddalore has better air quality with an AQI of 25 compared to Howrah's 117. That's a significant difference of 92 points.