Chapra vs Puducherry
Side-by-side air quality comparison between Chapra and Puducherry.
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 | Chapra | Puducherry |
|---|---|---|
| PM2.5(µg/m³) | 99.00 | 12.20 |
| PM10(µg/m³) | 115.50 | 14.50 |
| NO₂(µg/m³) | 53.70 | 18.70 |
| SO₂(µg/m³) | 13.70 | 9.00 |
| O₃(µg/m³) | 10.00 | 33.00 |
| CO(µg/m³) | 858.00 | 402.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chapra averaged an AQI of 149 while Puducherry averaged 55 — a 94-point (171%) gap, with Chapra the more polluted and Puducherry the cleaner of the two. On 919 days when both cities reported, Puducherry was cleaner on 872 of them; the average daily gap was 141 AQI points.
Seasonality & days
Chapra peaks in January, while Puducherry peaks in December. Chapra logged 2.4% Severe days and 26.8% Good-or-Satisfactory days; Puducherry was 0% Severe and 95.4% Good-or-Satisfactory. Longest clean-air streaks: Chapra 14 days, Puducherry 117 days.
Year-over-year progress
Chapra has improved by 181 AQI points (54.8%) from 2021 to 2024; Puducherry has worsened by 1 AQI points (1.9%) over the same window. The worst recorded day for Chapra reached AQI 452 at Darshan Nagar (BSPCB) on 2022-12-20; Puducherry hit AQI 274 at Jawahar Nagar (PPCC) on 2022-10-25.
Station-level disparity
Chapra spans 1 CPCB stations with a 0-point spread (min 195, max 195); Puducherry spans 1 stations with a 0-point spread (min 56, max 56).
Verdict
🏆 Puducherry has better air quality with an AQI of 20 compared to Chapra's 231. That's a significant difference of 211 points.