Ariyalur vs Delhi
Side-by-side air quality comparison between Ariyalur and Delhi.
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 | Delhi |
|---|---|---|
| PM2.5(µg/m³) | 7.50 | 78.20 |
| PM10(µg/m³) | 9.90 | 154.10 |
| NO₂(µg/m³) | 8.40 | 47.90 |
| SO₂(µg/m³) | 5.00 | 33.40 |
| O₃(µg/m³) | 42.00 | 43.00 |
| CO(µg/m³) | 137.00 | 545.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Delhi averaged 210 — a 164-point (357%) gap, with Delhi the more polluted and Ariyalur the cleaner of the two. On 610 days when both cities reported, Ariyalur was cleaner on 610 of them; the average daily gap was 246 AQI points.
Seasonality & days
Ariyalur peaks in March, while Delhi peaks in November. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Delhi was 18.7% Severe and 1.7% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Delhi 3 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Delhi has improved by 42 AQI points (16.7%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Delhi hit AQI 500 at Ashok Vihar (DPCC) on 2024-11-18.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Delhi spans 39 stations with a 84-point spread (min 178, max 262).
Verdict
🏆 Ariyalur has better air quality with an AQI of 13 compared to Delhi's 161. That's a significant difference of 148 points.