Ludhiana vs Saharsa
Side-by-side air quality comparison between Ludhiana and Saharsa.
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 | Ludhiana | Saharsa |
|---|---|---|
| PM2.5(µg/m³) | 71.50 | 99.90 |
| PM10(µg/m³) | 100.40 | 105.70 |
| NO₂(µg/m³) | 31.30 | 26.10 |
| SO₂(µg/m³) | 17.00 | 13.00 |
| O₃(µg/m³) | 62.00 | 62.00 |
| CO(µg/m³) | 748.00 | 670.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2021, Ludhiana averaged an AQI of 117 while Saharsa averaged 139 — a 22-point (19%) gap, with Saharsa the more polluted and Ludhiana the cleaner of the two. On 29 days when both cities reported, Ludhiana was cleaner on 25 of them; the average daily gap was 97 AQI points.
Seasonality & days
Ludhiana peaks in November, while Saharsa peaks in January. Ludhiana logged 0.3% Severe days and 53.599999999999994% Good-or-Satisfactory days; Saharsa was 1.4% Severe and 28.4% Good-or-Satisfactory. Longest clean-air streaks: Ludhiana 53 days, Saharsa 20 days.
Year-over-year progress
Ludhiana has improved by 79 AQI points (40.3%) from 2017 to 2021; Saharsa has improved by 139 AQI points (50%) over the same window. The worst recorded day for Ludhiana reached AQI 488 at Punjab Agricultural University (PPCB) on 2018-06-14; Saharsa hit AQI 454 at Police Line (BSPCB) on 2022-12-13.
Station-level disparity
Ludhiana spans 1 CPCB stations with a 0-point spread (min 118, max 118); Saharsa spans 1 stations with a 0-point spread (min 188, max 188).
Verdict
🏆 Ludhiana has better air quality with an AQI of 139 compared to Saharsa's 234. That's a significant difference of 95 points.