Chandigarh vs Perundurai
Side-by-side air quality comparison between Chandigarh and Perundurai.
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 | Chandigarh | Perundurai |
|---|---|---|
| PM2.5(µg/m³) | 46.30 | 9.20 |
| PM10(µg/m³) | 63.60 | 10.30 |
| NO₂(µg/m³) | 30.10 | 10.50 |
| SO₂(µg/m³) | 10.30 | 3.60 |
| O₃(µg/m³) | 64.00 | 35.00 |
| CO(µg/m³) | 602.00 | 172.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chandigarh averaged an AQI of 153 while Perundurai averaged 75 — a 78-point (104%) gap, with Chandigarh the more polluted and Perundurai the cleaner of the two. On 57 days when both cities reported, Perundurai was cleaner on 57 of them; the average daily gap was 184 AQI points.
Seasonality & days
Chandigarh peaks in January, while Perundurai peaks in November. Chandigarh logged 0.3% Severe days and 39.9% Good-or-Satisfactory days; Perundurai was 0% Severe and 80.7% Good-or-Satisfactory. Longest clean-air streaks: Chandigarh 92 days, Perundurai 13 days.
Year-over-year progress
The worst recorded day for Chandigarh reached AQI 452 at Sector-53 (CPCC) on 2022-11-09; Perundurai hit AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12.
Station-level disparity
Chandigarh spans 3 CPCB stations with a 43-point spread (min 107, max 150); Perundurai spans 1 stations with a 0-point spread (min 75, max 75).
Verdict
🏆 Perundurai has better air quality with an AQI of 15 compared to Chandigarh's 78. That's a significant difference of 63 points.