Kanchipuram vs Patna
Side-by-side air quality comparison between Kanchipuram and Patna.
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 | Kanchipuram | Patna |
|---|---|---|
| PM2.5(µg/m³) | 9.70 | 99.00 |
| PM10(µg/m³) | 11.70 | 111.80 |
| NO₂(µg/m³) | 12.20 | 49.30 |
| SO₂(µg/m³) | 4.60 | 18.10 |
| O₃(µg/m³) | 41.00 | 19.00 |
| CO(µg/m³) | 265.00 | 704.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kanchipuram averaged an AQI of 51 while Patna averaged 172 — a 121-point (237%) gap, with Patna the more polluted and Kanchipuram the cleaner of the two. On 347 days when both cities reported, Kanchipuram was cleaner on 346 of them; the average daily gap was 222 AQI points.
Seasonality & days
Kanchipuram peaks in February, while Patna peaks in December. Kanchipuram logged 0% Severe days and 94% Good-or-Satisfactory days; Patna was 7.5% Severe and 19.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Kanchipuram 18 days, Patna 30 days.
Year-over-year progress
Kanchipuram has improved by 18 AQI points (26.1%) from 2022 to 2024; Patna has improved by 40 AQI points (18.9%) over the same window. The worst recorded day for Kanchipuram reached AQI 320 at Kilambi (TNPCB) on 2023-05-22; Patna hit AQI 491 at IGSC Planetarium Complex (BSPCB) on 2016-01-01.
Station-level disparity
Kanchipuram spans 1 CPCB stations with a 0-point spread (min 57, max 57); Patna spans 6 stations with a 39-point spread (min 154, max 193).
Verdict
🏆 Kanchipuram has better air quality with an AQI of 16 compared to Patna's 231. That's a significant difference of 215 points.