Delhi vs Kalyān
Side-by-side air quality comparison between Delhi and Kalyān.
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 | Kalyān |
|---|---|---|
| PM2.5(µg/m³) | 78.50 | 24.30 |
| PM10(µg/m³) | 302.70 | 50.80 |
| NO₂(µg/m³) | 5.40 | 5.00 |
| SO₂(µg/m³) | 29.40 | 16.90 |
| O₃(µg/m³) | 249.00 | 106.00 |
| CO(µg/m³) | 387.00 | 150.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Delhi averaged an AQI of 210 while Kalyān averaged 95 — a 115-point (121%) gap, with Delhi the more polluted and Kalyān the cleaner of the two. On 1414 days when both cities reported, Kalyān was cleaner on 1394 of them; the average daily gap was 179 AQI points.
Seasonality & days
Delhi peaks in November, while Kalyān peaks in January. Delhi logged 18.7% Severe days and 1.7% Good-or-Satisfactory days; Kalyān was 0.1% Severe and 46.4% Good-or-Satisfactory. Longest clean-air streaks: Delhi 3 days, Kalyān 78 days.
Year-over-year progress
Delhi has improved by 42 AQI points (16.7%) from 2016 to 2024; Kalyān has improved by 4 AQI points (4%) over the same window. The worst recorded day for Delhi reached AQI 500 at Ashok Vihar (DPCC) on 2024-11-18; Kalyān hit AQI 414 at Khadakpada (MPCB) on 2022-01-24.
Station-level disparity
Delhi spans 39 CPCB stations with a 84-point spread (min 178, max 262); Kalyān spans 2 stations with a 18-point spread (min 98, max 116).
Verdict
🏆 Kalyān has better air quality with an AQI of 52 compared to Delhi's 253. That's a significant difference of 201 points.