Hisar vs Puducherry
Side-by-side air quality comparison between Hisar 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 | Hisar | Puducherry |
|---|---|---|
| PM2.5(µg/m³) | 75.00 | 12.20 |
| PM10(µg/m³) | 231.00 | 14.50 |
| NO₂(µg/m³) | 42.00 | 18.70 |
| SO₂(µg/m³) | 7.20 | 9.00 |
| O₃(µg/m³) | 25.00 | 33.00 |
| CO(µg/m³) | 573.00 | 402.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hisar averaged an AQI of 136 while Puducherry averaged 55 — a 81-point (147%) gap, with Hisar the more polluted and Puducherry the cleaner of the two. On 908 days when both cities reported, Puducherry was cleaner on 837 of them; the average daily gap was 113 AQI points.
Seasonality & days
Hisar peaks in November, while Puducherry peaks in December. Hisar logged 1.6% Severe days and 29.700000000000003% Good-or-Satisfactory days; Puducherry was 0% Severe and 95.4% Good-or-Satisfactory. Longest clean-air streaks: Hisar 34 days, Puducherry 117 days.
Year-over-year progress
Hisar has improved by 39 AQI points (22.3%) from 2019 to 2024; Puducherry has worsened by 1 AQI points (1.9%) over the same window. The worst recorded day for Hisar reached AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02; Puducherry hit AQI 274 at Jawahar Nagar (PPCC) on 2022-10-25.
Station-level disparity
Hisar spans 1 CPCB stations with a 0-point spread (min 168, max 168); 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 Hisar's 187. That's a significant difference of 167 points.