Bhagalpur vs Perundurai
Side-by-side air quality comparison between Bhagalpur 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 | Bhagalpur | Perundurai |
|---|---|---|
| PM2.5(µg/m³) | 61.20 | 6.80 |
| PM10(µg/m³) | 65.90 | 8.00 |
| NO₂(µg/m³) | 25.30 | 11.30 |
| SO₂(µg/m³) | 25.40 | 3.20 |
| O₃(µg/m³) | 53.00 | 32.00 |
| CO(µg/m³) | 736.00 | 159.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhagalpur averaged an AQI of 164 while Perundurai averaged 75 — a 89-point (119%) gap, with Bhagalpur the more polluted and Perundurai the cleaner of the two. On 57 days when both cities reported, Perundurai was cleaner on 56 of them; the average daily gap was 128 AQI points.
Seasonality & days
Bhagalpur peaks in January, while Perundurai peaks in November. Bhagalpur logged 1.9% Severe days and 19.9% Good-or-Satisfactory days; Perundurai was 0% Severe and 80.7% Good-or-Satisfactory. Longest clean-air streaks: Bhagalpur 20 days, Perundurai 13 days.
Year-over-year progress
The worst recorded day for Bhagalpur reached AQI 451 at Mayaganj (BSPCB) on 2022-12-30; Perundurai hit AQI 153 at SIPCOT Industrial Park (TNPCB) on 2024-11-12.
Station-level disparity
Bhagalpur spans 2 CPCB stations with a 26-point spread (min 170, max 196); 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 Bhagalpur's 105. That's a significant difference of 94 points.