Bhagalpur vs Kolār
Side-by-side air quality comparison between Bhagalpur and Kolār.
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 | Kolār |
|---|---|---|
| PM2.5(µg/m³) | 61.20 | 5.90 |
| PM10(µg/m³) | 65.90 | 7.20 |
| NO₂(µg/m³) | 25.30 | 10.90 |
| SO₂(µg/m³) | 25.40 | 4.70 |
| O₃(µg/m³) | 53.00 | 35.00 |
| CO(µg/m³) | 736.00 | 189.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhagalpur averaged an AQI of 164 while Kolār averaged 65 — a 99-point (152%) gap, with Bhagalpur the more polluted and Kolār the cleaner of the two. On 545 days when both cities reported, Kolār was cleaner on 519 of them; the average daily gap was 136 AQI points.
Seasonality & days
Bhagalpur peaks in January, while Kolār peaks in September. Bhagalpur logged 1.9% Severe days and 19.9% Good-or-Satisfactory days; Kolār was 0.9% Severe and 85.30000000000001% Good-or-Satisfactory. Longest clean-air streaks: Bhagalpur 20 days, Kolār 17 days.
Year-over-year progress
Bhagalpur has improved by 123 AQI points (42.9%) from 2021 to 2024; Kolār has improved by 56 AQI points (46.3%) over the same window. The worst recorded day for Bhagalpur reached AQI 451 at Mayaganj (BSPCB) on 2022-12-30; Kolār hit AQI 500 at Tamaka Ind Area (KSPCB) on 2018-09-18.
Station-level disparity
Bhagalpur spans 2 CPCB stations with a 26-point spread (min 170, max 196); Kolār spans 1 stations with a 0-point spread (min 71, max 71).
Verdict
🏆 Kolār has better air quality with an AQI of 10 compared to Bhagalpur's 105. That's a significant difference of 95 points.