Bulandshahr vs Ludhiana
Side-by-side air quality comparison between Bulandshahr and Ludhiana.
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 | Bulandshahr | Ludhiana |
|---|---|---|
| PM2.5(µg/m³) | 69.20 | 71.50 |
| PM10(µg/m³) | 121.10 | 100.40 |
| NO₂(µg/m³) | 22.90 | 31.30 |
| SO₂(µg/m³) | 11.10 | 17.00 |
| O₃(µg/m³) | 91.00 | 62.00 |
| CO(µg/m³) | 455.00 | 748.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bulandshahr averaged an AQI of 142 while Ludhiana averaged 117 — a 25-point (21%) gap, with Bulandshahr the more polluted and Ludhiana the cleaner of the two. On 1145 days when both cities reported, Ludhiana was cleaner on 948 of them; the average daily gap was 105 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Bulandshahr logged 3.2% Severe days and 27.099999999999998% Good-or-Satisfactory days; Ludhiana was 0.3% Severe and 53.599999999999994% Good-or-Satisfactory. Longest clean-air streaks: Bulandshahr 41 days, Ludhiana 53 days.
Year-over-year progress
Bulandshahr has improved by 82 AQI points (36.6%) from 2018 to 2024; Ludhiana has improved by 79 AQI points (40.3%) over the same window. The worst recorded day for Bulandshahr reached AQI 500 at Yamunapuram (UPPCB) on 2018-06-13; Ludhiana hit AQI 488 at Punjab Agricultural University (PPCB) on 2018-06-14.
Station-level disparity
Bulandshahr spans 1 CPCB stations with a 0-point spread (min 180, max 180); Ludhiana spans 1 stations with a 0-point spread (min 118, max 118).
Verdict
🏆 Bulandshahr has better air quality with an AQI of 131 compared to Ludhiana's 139.