Ghaziabad vs Perundurai
Side-by-side air quality comparison between Ghaziabad 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 | Ghaziabad | Perundurai |
|---|---|---|
| PM2.5(µg/m³) | 71.90 | 6.80 |
| PM10(µg/m³) | 97.30 | 8.00 |
| NO₂(µg/m³) | 36.60 | 11.30 |
| SO₂(µg/m³) | 11.50 | 3.20 |
| O₃(µg/m³) | 36.00 | 32.00 |
| CO(µg/m³) | 522.00 | 159.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ghaziabad averaged an AQI of 177 while Perundurai averaged 75 — a 102-point (136%) gap, with Ghaziabad 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 232 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Ghaziabad logged 12.2% Severe days and 13.700000000000001% Good-or-Satisfactory days; Perundurai was 0% Severe and 80.7% Good-or-Satisfactory. Longest clean-air streaks: Ghaziabad 19 days, Perundurai 13 days.
Year-over-year progress
The worst recorded day for Ghaziabad reached AQI 500 at Vasundhara (UPPCB) on 2017-12-21; Perundurai hit AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12.
Station-level disparity
Ghaziabad spans 4 CPCB stations with a 30-point spread (min 198, max 228); Perundurai spans 1 stations with a 0-point spread (min 75, max 75).
Verdict
🏆 Perundurai has better air quality with an AQI of 11 compared to Ghaziabad's 140. That's a significant difference of 129 points.