Chennai vs Thanjavur
Side-by-side air quality comparison between Chennai 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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Thanjavur averaged 42 — a 26-point (62%) gap, with Chennai the more polluted and Thanjavur the cleaner of the two. On 70 days when both cities reported, Thanjavur was cleaner on 66 of them; the average daily gap was 60 AQI points.
Seasonality & days
Chennai peaks in December, while Thanjavur peaks in November. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Thanjavur was 0% Severe and 98.60000000000001% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Thanjavur 21 days.
Year-over-year progress
The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Thanjavur hit AQI 140 at Parisutham Nagar (TNPCB) on 2024-11-01.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Thanjavur spans 1 stations with a 0-point spread (min 42, max 42).