Karur vs Meerut
Side-by-side air quality comparison between Karur and Meerut.
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 | Meerut |
|---|---|---|
| PM2.5(µg/m³) | 2.30 | — |
| PM10(µg/m³) | 2.90 | — |
| NO₂(µg/m³) | 1.20 | — |
| SO₂(µg/m³) | 1.30 | — |
| O₃(µg/m³) | 81.00 | — |
| CO(µg/m³) | 120.00 | — |
| NH3(µg/m³) | — | — |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Karur averaged an AQI of 71 while Meerut averaged 144 — a 73-point (103%) gap, with Meerut 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 177 AQI points.
Seasonality & days
Karur peaks in December, while Meerut peaks in November. Karur logged 0% Severe days and 80.3% Good-or-Satisfactory days; Meerut was 2% Severe and 22.299999999999997% Good-or-Satisfactory. Longest clean-air streaks: Karur 34 days, Meerut 25 days.
Year-over-year progress
The worst recorded day for Karur reached AQI 149 at Kamadenu Nagar (TNPCB) on 2024-11-26; Meerut hit AQI 490 at Pallavpuram Phase 2 (UPPCB) on 2020-11-05.
Station-level disparity
Karur spans 1 CPCB stations with a 0-point spread (min 71, max 71); Meerut spans 3 stations with a 13-point spread (min 172, max 185).
Verdict
🏆 Karur has better air quality with an AQI of 4 compared to Meerut's 202. That's a significant difference of 198 points.