Kolkata vs Muzaffarnagar
Side-by-side air quality comparison between Kolkata and Muzaffarnagar.
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 | Kolkata | Muzaffarnagar |
|---|---|---|
| PM2.5(µg/m³) | 64.70 | 56.30 |
| PM10(µg/m³) | 69.40 | 61.50 |
| NO₂(µg/m³) | 18.10 | 20.90 |
| SO₂(µg/m³) | 13.10 | 11.30 |
| O₃(µg/m³) | 86.00 | 71.00 |
| CO(µg/m³) | 428.00 | 891.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kolkata averaged an AQI of 101 while Muzaffarnagar averaged 179 — a 78-point (77%) gap, with Muzaffarnagar the more polluted and Kolkata the cleaner of the two. On 1766 days when both cities reported, Kolkata was cleaner on 1205 of them; the average daily gap was 74 AQI points.
Seasonality & days
Kolkata peaks in January, while Muzaffarnagar peaks in December. Kolkata logged 1% Severe days and 47.800000000000004% Good-or-Satisfactory days; Muzaffarnagar was 1.1% Severe and 24.799999999999997% Good-or-Satisfactory. Longest clean-air streaks: Kolkata 75 days, Muzaffarnagar 25 days.
Year-over-year progress
Kolkata has improved by 76 AQI points (42.9%) from 2017 to 2024; Muzaffarnagar has improved by 40 AQI points (18.3%) over the same window. The worst recorded day for Kolkata reached AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23; Muzaffarnagar hit AQI 446 at New Mandi (UPPCB) on 2019-01-02.
Station-level disparity
Kolkata spans 7 CPCB stations with a 56-point spread (min 95, max 151); Muzaffarnagar spans 1 stations with a 0-point spread (min 183, max 183).
Verdict
🏆 Muzaffarnagar has better air quality with an AQI of 94 compared to Kolkata's 117.