Karur vs Thiruvananthapuram
Side-by-side air quality comparison between Karur and Thiruvananthapuram.
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 | Karur | Thiruvananthapuram |
|---|---|---|
| PM2.5(µg/m³) | 3.80 | 5.30 |
| PM10(µg/m³) | 4.20 | 9.50 |
| NO₂(µg/m³) | 6.80 | 1.50 |
| SO₂(µg/m³) | 3.00 | 0.40 |
| O₃(µg/m³) | 38.00 | 38.00 |
| CO(µg/m³) | 131.00 | 102.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Karur averaged an AQI of 71 while Thiruvananthapuram averaged 56 — a 15-point (27%) gap, with Karur the more polluted and Thiruvananthapuram the cleaner of the two. On 71 days when both cities reported, Thiruvananthapuram was cleaner on 37 of them; the average daily gap was 31 AQI points.
Seasonality & days
Karur peaks in December, while Thiruvananthapuram peaks in January. Karur logged 0% Severe days and 80.3% Good-or-Satisfactory days; Thiruvananthapuram was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Karur 34 days, Thiruvananthapuram 172 days.
Year-over-year progress
The worst recorded day for Karur reached AQI 149 at Kamadenu Nagar (TNPCB) on 2024-11-26; Thiruvananthapuram hit AQI 387 at Plammoodu Thiruvananthapuram (PCB) on 2021-08-30.
Station-level disparity
Karur spans 1 CPCB stations with a 0-point spread (min 71, max 71); Thiruvananthapuram spans 2 stations with a 7-point spread (min 57, max 64).
Verdict
🏆 Karur has better air quality with an AQI of 6 compared to Thiruvananthapuram's 10.