Cuddalore vs Siwan
Side-by-side air quality comparison between Cuddalore and Siwan.
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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Cuddalore averaged an AQI of 52 while Siwan averaged 148 — a 96-point (185%) gap, with Siwan the more polluted and Cuddalore the cleaner of the two. On 188 days when both cities reported, Cuddalore was cleaner on 174 of them; the average daily gap was 92 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; Siwan was 5.2% Severe and 17.7% Good-or-Satisfactory. Longest clean-air streaks: Cuddalore 34 days, Siwan 13 days.
Year-over-year progress
The worst recorded day for Cuddalore reached AQI 329 at Kudikadu (TNPCB) on 2024-04-05; Siwan hit AQI 488 at Chitragupta Nagar (BSPCB) on 2022-12-30.
Station-level disparity
Cuddalore spans 2 CPCB stations with a 11-point spread (min 46, max 57); Siwan spans 1 stations with a 0-point spread (min 197, max 197).