Kalyān vs Nalbāri
Side-by-side air quality comparison between Kalyān and Nalbāri.
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 | Nalbāri |
|---|---|---|
| PM2.5(µg/m³) | 22.10 | 57.90 |
| PM10(µg/m³) | 40.40 | 64.70 |
| NO₂(µg/m³) | 23.10 | 7.60 |
| SO₂(µg/m³) | 21.70 | 5.20 |
| O₃(µg/m³) | 19.00 | 112.00 |
| CO(µg/m³) | 174.00 | 397.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kalyān averaged an AQI of 95 while Nalbāri averaged 129 — a 34-point (36%) gap, with Nalbāri the more polluted and Kalyān the cleaner of the two. On 350 days when both cities reported, Kalyān was cleaner on 205 of them; the average daily gap was 58 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kalyān logged 0.1% Severe days and 46.4% Good-or-Satisfactory days; Nalbāri was 0% Severe and 41% Good-or-Satisfactory. Longest clean-air streaks: Kalyān 78 days, Nalbāri 18 days.
Year-over-year progress
Kalyān has improved by 4 AQI points (4%) from 2019 to 2024; Nalbāri has improved by 72 AQI points (35.8%) over the same window. The worst recorded day for Kalyān reached AQI 414 at Khadakpada (MPCB) on 2022-01-24; Nalbāri hit AQI 384 at Bata Chowk (PCBA) on 2024-01-08.
Station-level disparity
Kalyān spans 2 CPCB stations with a 18-point spread (min 98, max 116); Nalbāri spans 1 stations with a 0-point spread (min 141, max 141).
Verdict
🏆 Kalyān has better air quality with an AQI of 40 compared to Nalbāri's 97. That's a significant difference of 57 points.