Chennai vs Khanna
Side-by-side air quality comparison between Chennai and Khanna.
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 | Khanna |
|---|---|---|
| PM2.5(µg/m³) | 11.70 | 57.60 |
| PM10(µg/m³) | 13.10 | 86.80 |
| NO₂(µg/m³) | 14.20 | 25.80 |
| SO₂(µg/m³) | 10.10 | 15.90 |
| O₃(µg/m³) | 56.00 | 75.00 |
| CO(µg/m³) | 308.00 | 753.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Khanna averaged 102 — a 34-point (50%) gap, with Khanna the more polluted and Chennai the cleaner of the two. On 357 days when both cities reported, Chennai was cleaner on 181 of them; the average daily gap was 34 AQI points.
Seasonality & days
Chennai peaks in December, while Khanna peaks in November. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Khanna was 0% Severe and 61.599999999999994% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Khanna 60 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Khanna has worsened by 4 AQI points (4.1%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Khanna hit AQI 297 at Kalal Majra (PPCB) on 2023-11-09.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Khanna spans 1 stations with a 0-point spread (min 100, max 100).
Verdict
🏆 Chennai has better air quality with an AQI of 20 compared to Khanna's 96. That's a significant difference of 76 points.