Karur vs Noida
Side-by-side air quality comparison between Karur and Noida.
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 | Noida |
|---|---|---|
| PM2.5(µg/m³) | 3.80 | 69.60 |
| PM10(µg/m³) | 4.20 | 137.40 |
| NO₂(µg/m³) | 6.80 | 30.10 |
| SO₂(µg/m³) | 3.00 | 17.90 |
| O₃(µg/m³) | 38.00 | 65.00 |
| CO(µg/m³) | 131.00 | 562.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Karur averaged an AQI of 71 while Noida averaged 182 — a 111-point (156%) gap, with Noida the more polluted and Karur the cleaner of the two. On 71 days when both cities reported, Karur was cleaner on 71 of them; the average daily gap was 208 AQI points.
Seasonality & days
Karur peaks in December, while Noida peaks in November. Karur logged 0% Severe days and 80.3% Good-or-Satisfactory days; Noida was 8.9% Severe and 16.5% Good-or-Satisfactory. Longest clean-air streaks: Karur 34 days, Noida 14 days.
Year-over-year progress
The worst recorded day for Karur reached AQI 149 at Kamadenu Nagar (TNPCB) on 2024-11-26; Noida hit AQI 500 at Sector-1 (UPPCB) on 2019-11-01.
Station-level disparity
Karur spans 1 CPCB stations with a 0-point spread (min 71, max 71); Noida spans 4 stations with a 15-point spread (min 195, max 210).
Verdict
🏆 Karur has better air quality with an AQI of 6 compared to Noida's 133. That's a significant difference of 127 points.