Hisar vs Perundurai
Side-by-side air quality comparison between Hisar 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 | Hisar | Perundurai |
|---|---|---|
| PM2.5(µg/m³) | 70.50 | 3.10 |
| PM10(µg/m³) | 448.90 | 3.40 |
| NO₂(µg/m³) | 1.40 | 1.80 |
| SO₂(µg/m³) | 6.60 | 1.90 |
| O₃(µg/m³) | 156.00 | 87.00 |
| CO(µg/m³) | 240.00 | 149.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hisar averaged an AQI of 136 while Perundurai averaged 75 — a 61-point (81%) gap, with Hisar the more polluted and Perundurai the cleaner of the two. On 39 days when both cities reported, Perundurai was cleaner on 38 of them; the average daily gap was 144 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Hisar logged 1.6% Severe days and 29.700000000000003% Good-or-Satisfactory days; Perundurai was 0% Severe and 80.7% Good-or-Satisfactory. Longest clean-air streaks: Hisar 34 days, Perundurai 13 days.
Year-over-year progress
The worst recorded day for Hisar reached AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02; Perundurai hit AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12.
Station-level disparity
Hisar spans 1 CPCB stations with a 0-point spread (min 168, max 168); Perundurai spans 1 stations with a 0-point spread (min 75, max 75).
Verdict
🏆 Perundurai has better air quality with an AQI of 5 compared to Hisar's 412. That's a significant difference of 407 points.