Delhi vs Puducherry
Side-by-side air quality comparison between Delhi and Puducherry.
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 | Delhi | Puducherry |
|---|---|---|
| PM2.5(µg/m³) | 78.20 | 12.20 |
| PM10(µg/m³) | 154.10 | 14.50 |
| NO₂(µg/m³) | 47.90 | 18.70 |
| SO₂(µg/m³) | 33.40 | 9.00 |
| O₃(µg/m³) | 43.00 | 33.00 |
| CO(µg/m³) | 545.00 | 402.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Delhi averaged an AQI of 210 while Puducherry averaged 55 — a 155-point (282%) gap, with Delhi the more polluted and Puducherry the cleaner of the two. On 1377 days when both cities reported, Puducherry was cleaner on 1377 of them; the average daily gap was 242 AQI points.
Seasonality & days
Delhi peaks in November, while Puducherry peaks in December. Delhi logged 18.7% Severe days and 1.7% Good-or-Satisfactory days; Puducherry was 0% Severe and 95.4% Good-or-Satisfactory. Longest clean-air streaks: Delhi 3 days, Puducherry 117 days.
Year-over-year progress
Delhi has improved by 42 AQI points (16.7%) from 2016 to 2024; Puducherry has worsened by 1 AQI points (1.9%) over the same window. The worst recorded day for Delhi reached AQI 500 at Ashok Vihar (DPCC) on 2024-11-18; Puducherry hit AQI 274 at Jawahar Nagar (PPCC) on 2022-10-25.
Station-level disparity
Delhi spans 39 CPCB stations with a 84-point spread (min 178, max 262); Puducherry spans 1 stations with a 0-point spread (min 56, max 56).
Verdict
🏆 Puducherry has better air quality with an AQI of 20 compared to Delhi's 161. That's a significant difference of 141 points.