Kalyān vs Siliguri
Side-by-side air quality comparison between Kalyān and Siliguri.
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 | Kalyān | Siliguri |
|---|---|---|
| PM2.5(µg/m³) | 22.10 | 82.20 |
| PM10(µg/m³) | 40.40 | 105.70 |
| NO₂(µg/m³) | 23.10 | 15.40 |
| SO₂(µg/m³) | 21.70 | 6.50 |
| O₃(µg/m³) | 19.00 | 95.00 |
| CO(µg/m³) | 174.00 | 539.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kalyān averaged an AQI of 95 while Siliguri averaged 81 — a 14-point (17%) gap, with Kalyān the more polluted and Siliguri the cleaner of the two. On 1250 days when both cities reported, Siliguri was cleaner on 839 of them; the average daily gap was 47 AQI points.
Seasonality & days
Kalyān peaks in January, while Siliguri peaks in February. Kalyān logged 0.1% Severe days and 46.4% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Kalyān 78 days, Siliguri 180 days.
Year-over-year progress
Kalyān has improved by 4 AQI points (4%) from 2019 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Kalyān reached AQI 414 at Khadakpada (MPCB) on 2022-01-24; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Kalyān spans 2 CPCB stations with a 18-point spread (min 98, max 116); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).
Verdict
🏆 Kalyān has better air quality with an AQI of 40 compared to Siliguri's 174. That's a significant difference of 134 points.