Ludhiana vs Noida
Side-by-side air quality comparison between Ludhiana and Noida.
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 | Noida |
|---|---|---|
| PM2.5(µg/m³) | 81.70 | 69.60 |
| PM10(µg/m³) | 109.20 | 137.40 |
| NO₂(µg/m³) | 40.40 | 30.10 |
| SO₂(µg/m³) | 15.20 | 17.90 |
| O₃(µg/m³) | 35.00 | 65.00 |
| CO(µg/m³) | 797.00 | 562.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2021, Ludhiana averaged an AQI of 117 while Noida averaged 182 — a 65-point (56%) gap, with Noida the more polluted and Ludhiana the cleaner of the two. On 1508 days when both cities reported, Ludhiana was cleaner on 1403 of them; the average daily gap was 124 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; Noida was 8.9% Severe and 16.5% Good-or-Satisfactory. Longest clean-air streaks: Ludhiana 53 days, Noida 14 days.
Year-over-year progress
Ludhiana has improved by 79 AQI points (40.3%) from 2017 to 2021; Noida has improved by 79 AQI points (30.3%) over the same window. The worst recorded day for Ludhiana reached AQI 488 at Punjab Agricultural University (PPCB) on 2018-06-14; Noida hit AQI 500 at Sector-1 (UPPCB) on 2019-11-01.
Station-level disparity
Ludhiana spans 1 CPCB stations with a 0-point spread (min 118, max 118); Noida spans 4 stations with a 15-point spread (min 195, max 210).
Verdict
🏆 Noida has better air quality with an AQI of 133 compared to Ludhiana's 173.