Ariyalur vs Chandigarh
Side-by-side air quality comparison between Ariyalur and Chandigarh.
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 | Ariyalur | Chandigarh |
|---|---|---|
| PM2.5(µg/m³) | 6.80 | 46.30 |
| PM10(µg/m³) | 8.30 | 63.60 |
| NO₂(µg/m³) | 7.50 | 30.10 |
| SO₂(µg/m³) | 6.50 | 10.30 |
| O₃(µg/m³) | 43.00 | 64.00 |
| CO(µg/m³) | 133.00 | 602.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Chandigarh averaged 153 — a 107-point (233%) gap, with Chandigarh the more polluted and Ariyalur the cleaner of the two. On 610 days when both cities reported, Ariyalur was cleaner on 595 of them; the average daily gap was 122 AQI points.
Seasonality & days
Ariyalur peaks in March, while Chandigarh peaks in January. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Chandigarh was 0.3% Severe and 39.9% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Chandigarh 92 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Chandigarh has worsened by 27 AQI points (21.4%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Chandigarh hit AQI 452 at Sector-53 (CPCC) on 2022-11-09.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Chandigarh spans 3 stations with a 43-point spread (min 107, max 150).
Verdict
🏆 Ariyalur has better air quality with an AQI of 11 compared to Chandigarh's 78. That's a significant difference of 67 points.