Guwahati vs Ludhiana
Side-by-side air quality comparison between Guwahati 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 | Guwahati | Ludhiana |
|---|---|---|
| PM2.5(µg/m³) | 35.50 | 42.80 |
| PM10(µg/m³) | 41.80 | 73.80 |
| NO₂(µg/m³) | 1.20 | 2.30 |
| SO₂(µg/m³) | 4.90 | 11.40 |
| O₃(µg/m³) | 150.00 | 194.00 |
| CO(µg/m³) | 359.00 | 346.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Guwahati averaged an AQI of 123 while Ludhiana averaged 117 — a 6-point (5%) gap, with Guwahati the more polluted and Ludhiana the cleaner of the two. On 991 days when both cities reported, Guwahati was cleaner on 541 of them; the average daily gap was 78 AQI points.
Seasonality & days
Guwahati peaks in January, while Ludhiana peaks in November. Guwahati logged 0.1% Severe days and 44.9% Good-or-Satisfactory days; Ludhiana was 0.3% Severe and 53.599999999999994% Good-or-Satisfactory. Longest clean-air streaks: Guwahati 105 days, Ludhiana 53 days.
Year-over-year progress
Guwahati has worsened by 14 AQI points (12.8%) from 2019 to 2024; Ludhiana has improved by 79 AQI points (40.3%) over the same window. The worst recorded day for Guwahati reached AQI 420 at Railway Colony (PCBA) on 2023-01-15; Ludhiana hit AQI 488 at Punjab Agricultural University (PPCB) on 2018-06-14.
Station-level disparity
Guwahati spans 4 CPCB stations with a 26-point spread (min 118, max 144); Ludhiana spans 1 stations with a 0-point spread (min 118, max 118).
Verdict
🏆 Guwahati has better air quality with an AQI of 60 compared to Ludhiana's 74.