Hassan vs Perundurai
Side-by-side air quality comparison between Hassan 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 | Hassan | Perundurai |
|---|---|---|
| PM2.5(µg/m³) | 2.80 | 9.20 |
| PM10(µg/m³) | 4.30 | 10.30 |
| NO₂(µg/m³) | 3.60 | 10.50 |
| SO₂(µg/m³) | 0.70 | 3.60 |
| O₃(µg/m³) | 40.00 | 35.00 |
| CO(µg/m³) | 121.00 | 172.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hassan averaged an AQI of 60 while Perundurai averaged 75 — a 15-point (25%) gap, with Perundurai the more polluted and Hassan the cleaner of the two. On 39 days when both cities reported, Hassan was cleaner on 24 of them; the average daily gap was 17 AQI points.
Seasonality & days
Hassan peaks in March, while Perundurai peaks in November. Hassan logged 0% Severe days and 92.5% Good-or-Satisfactory days; Perundurai was 0% Severe and 80.7% Good-or-Satisfactory. Longest clean-air streaks: Hassan 51 days, Perundurai 13 days.
Year-over-year progress
The worst recorded day for Hassan reached AQI 212 at BKatihalli (KSPCB) on 2024-05-11; Perundurai hit AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12.
Station-level disparity
Hassan spans 1 CPCB stations with a 0-point spread (min 63, max 63); Perundurai spans 1 stations with a 0-point spread (min 75, max 75).
Verdict
🏆 Hassan has better air quality with an AQI of 5 compared to Perundurai's 15.