Noida vs Silchar
Side-by-side air quality comparison between Noida and Silchar.
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 | Noida | Silchar |
|---|---|---|
| PM2.5(µg/m³) | 67.50 | 53.00 |
| PM10(µg/m³) | 134.10 | 63.80 |
| NO₂(µg/m³) | 34.90 | 13.90 |
| SO₂(µg/m³) | 17.50 | 7.50 |
| O₃(µg/m³) | 48.00 | 95.00 |
| CO(µg/m³) | 554.00 | 276.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Noida averaged an AQI of 182 while Silchar averaged 52 — a 130-point (250%) gap, with Noida the more polluted and Silchar the cleaner of the two. On 352 days when both cities reported, Silchar was cleaner on 348 of them; the average daily gap was 161 AQI points.
Seasonality & days
Noida peaks in November, while Silchar peaks in February. Noida logged 8.9% Severe days and 16.5% Good-or-Satisfactory days; Silchar was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Noida 14 days, Silchar 87 days.
Year-over-year progress
Noida has improved by 79 AQI points (30.3%) from 2017 to 2024; Silchar has worsened by 11 AQI points (26.8%) over the same window. The worst recorded day for Noida reached AQI 500 at Sector-1 (UPPCB) on 2019-11-01; Silchar hit AQI 89 at Tarapur (PCBA) on 2023-04-29.
Station-level disparity
Noida spans 4 CPCB stations with a 15-point spread (min 195, max 210); Silchar spans 1 stations with a 0-point spread (min 47, max 47).
Verdict
🏆 Silchar has better air quality with an AQI of 89 compared to Noida's 126.