Chennai vs Munger
Side-by-side air quality comparison between Chennai and Munger.
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 | Munger |
|---|---|---|
| PM2.5(µg/m³) | 11.70 | 61.20 |
| PM10(µg/m³) | 13.10 | 67.50 |
| NO₂(µg/m³) | 14.20 | 28.20 |
| SO₂(µg/m³) | 10.10 | 17.40 |
| O₃(µg/m³) | 56.00 | 71.00 |
| CO(µg/m³) | 308.00 | 516.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Munger averaged 130 — a 62-point (91%) gap, with Munger the more polluted and Chennai the cleaner of the two. On 640 days when both cities reported, Chennai was cleaner on 473 of them; the average daily gap was 95 AQI points.
Seasonality & days
Chennai peaks in December, while Munger peaks in January. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Munger was 1.5% Severe and 22.9% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Munger 12 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Munger has improved by 135 AQI points (50.9%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Munger hit AQI 445 at Town Hall (BSPCB) on 2022-01-06.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Munger spans 1 stations with a 0-point spread (min 180, max 180).
Verdict
🏆 Chennai has better air quality with an AQI of 20 compared to Munger's 105. That's a significant difference of 85 points.