Ludhiana vs Sagar
Side-by-side air quality comparison between Ludhiana and Sagar.
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 | Sagar |
|---|---|---|
| PM2.5(µg/m³) | 81.70 | 25.90 |
| PM10(µg/m³) | 109.20 | 49.60 |
| NO₂(µg/m³) | 40.40 | 14.50 |
| SO₂(µg/m³) | 15.20 | 3.20 |
| O₃(µg/m³) | 35.00 | 48.00 |
| CO(µg/m³) | 797.00 | 223.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2021, Ludhiana averaged an AQI of 117 while Sagar averaged 96 — a 21-point (22%) gap, with Ludhiana the more polluted and Sagar the cleaner of the two. On 626 days when both cities reported, Sagar was cleaner on 500 of them; the average daily gap was 51 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Ludhiana logged 0.3% Severe days and 53.599999999999994% Good-or-Satisfactory days; Sagar was 0% Severe and 69.9% Good-or-Satisfactory. Longest clean-air streaks: Ludhiana 53 days, Sagar 57 days.
Year-over-year progress
Ludhiana has improved by 79 AQI points (40.3%) from 2017 to 2021; Sagar has worsened by 24 AQI points (33.3%) over the same window. The worst recorded day for Ludhiana reached AQI 488 at Punjab Agricultural University (PPCB) on 2018-06-14; Sagar hit AQI 347 at Civil Lines (MPPCB) on 2024-12-25.
Station-level disparity
Ludhiana spans 1 CPCB stations with a 0-point spread (min 118, max 118); Sagar spans 2 stations with a 45-point spread (min 73, max 118).
Verdict
🏆 Sagar has better air quality with an AQI of 50 compared to Ludhiana's 173. That's a significant difference of 123 points.