Delhi vs Tirunelveli
Side-by-side air quality comparison between Delhi and Tirunelveli.
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 | Tirunelveli |
|---|---|---|
| PM2.5(µg/m³) | 80.80 | 4.40 |
| PM10(µg/m³) | 143.90 | 5.20 |
| NO₂(µg/m³) | 41.80 | 5.50 |
| SO₂(µg/m³) | 33.00 | 1.80 |
| O₃(µg/m³) | 63.00 | 30.00 |
| CO(µg/m³) | 568.00 | 151.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Delhi averaged an AQI of 210 while Tirunelveli averaged 30 — a 180-point (600%) gap, with Delhi the more polluted and Tirunelveli the cleaner of the two. On 119 days when both cities reported, Tirunelveli was cleaner on 119 of them; the average daily gap was 288 AQI points.
Seasonality & days
Delhi peaks in November, while Tirunelveli peaks in October. Delhi logged 18.7% Severe days and 1.7% Good-or-Satisfactory days; Tirunelveli was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Delhi 3 days, Tirunelveli 31 days.
Year-over-year progress
The worst recorded day for Delhi reached AQI 500 at Ashok Vihar (DPCC) on 2024-11-18; Tirunelveli hit AQI 42 at Municipal Corporation Office (TNPCB) on 2024-10-30.
Station-level disparity
Delhi spans 39 CPCB stations with a 84-point spread (min 178, max 262); Tirunelveli spans 1 stations with a 0-point spread (min 30, max 30).
Verdict
🏆 Tirunelveli has better air quality with an AQI of 7 compared to Delhi's 170. That's a significant difference of 163 points.