Chennai vs Muzaffarnagar
Side-by-side air quality comparison between Chennai 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 | Chennai | Muzaffarnagar |
|---|---|---|
| PM2.5(µg/m³) | 11.70 | 56.30 |
| PM10(µg/m³) | 13.10 | 61.50 |
| NO₂(µg/m³) | 14.20 | 20.90 |
| SO₂(µg/m³) | 10.10 | 11.30 |
| O₃(µg/m³) | 56.00 | 71.00 |
| CO(µg/m³) | 308.00 | 891.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Muzaffarnagar averaged 179 — a 111-point (163%) gap, with Muzaffarnagar the more polluted and Chennai the cleaner of the two. On 1768 days when both cities reported, Chennai was cleaner on 1311 of them; the average daily gap was 96 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Muzaffarnagar was 1.1% Severe and 24.799999999999997% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Muzaffarnagar 25 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Muzaffarnagar has improved by 40 AQI points (18.3%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Muzaffarnagar hit AQI 446 at New Mandi (UPPCB) on 2019-01-02.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Muzaffarnagar spans 1 stations with a 0-point spread (min 183, max 183).
Verdict
🏆 Chennai has better air quality with an AQI of 20 compared to Muzaffarnagar's 94. That's a significant difference of 74 points.