Cuddalore vs Thanjavur
Side-by-side air quality comparison between Cuddalore and Thanjavur.
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 | Thanjavur |
|---|---|---|
| PM2.5(µg/m³) | 15.00 | 12.00 |
| PM10(µg/m³) | 18.20 | 13.70 |
| NO₂(µg/m³) | 15.90 | 9.70 |
| SO₂(µg/m³) | 10.00 | 3.90 |
| O₃(µg/m³) | 39.00 | 38.00 |
| CO(µg/m³) | 353.00 | 163.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Cuddalore averaged an AQI of 52 while Thanjavur averaged 42 — a 10-point (24%) gap, with Cuddalore the more polluted and Thanjavur the cleaner of the two. On 55 days when both cities reported, Thanjavur was cleaner on 37 of them; the average daily gap was 34 AQI points.
Seasonality & days
Cuddalore peaks in January, while Thanjavur peaks in November. Cuddalore logged 0% Severe days and 90.6% Good-or-Satisfactory days; Thanjavur was 0% Severe and 98.60000000000001% Good-or-Satisfactory. Longest clean-air streaks: Cuddalore 34 days, Thanjavur 21 days.
Year-over-year progress
The worst recorded day for Cuddalore reached AQI 329 at Kudikadu (TNPCB) on 2024-04-05; Thanjavur hit AQI 140 at Parisutham Nagar (TNPCB) on 2024-11-01.
Station-level disparity
Cuddalore spans 2 CPCB stations with a 11-point spread (min 46, max 57); Thanjavur spans 1 stations with a 0-point spread (min 42, max 42).
Verdict
🏆 Thanjavur has better air quality with an AQI of 20 compared to Cuddalore's 25.