Perundurai vs Siliguri
Side-by-side air quality comparison between Perundurai and Siliguri.
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 | Perundurai | Siliguri |
|---|---|---|
| PM2.5(µg/m³) | 9.20 | 77.80 |
| PM10(µg/m³) | 10.30 | 98.30 |
| NO₂(µg/m³) | 10.50 | 11.30 |
| SO₂(µg/m³) | 3.60 | 6.80 |
| O₃(µg/m³) | 35.00 | 115.00 |
| CO(µg/m³) | 172.00 | 523.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Perundurai averaged an AQI of 75 while Siliguri averaged 81 — a 6-point (8%) gap, with Siliguri the more polluted and Perundurai the cleaner of the two. On 57 days when both cities reported, Perundurai was cleaner on 37 of them; the average daily gap was 39 AQI points.
Seasonality & days
Perundurai peaks in November, while Siliguri peaks in February. Perundurai logged 0% Severe days and 80.7% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Perundurai 13 days, Siliguri 180 days.
Year-over-year progress
The worst recorded day for Perundurai reached AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Perundurai spans 1 CPCB stations with a 0-point spread (min 75, max 75); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).
Verdict
🏆 Perundurai has better air quality with an AQI of 15 compared to Siliguri's 160. That's a significant difference of 145 points.