Alwar vs Silchar
Side-by-side air quality comparison between Alwar 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 | Alwar | Silchar |
|---|---|---|
| PM2.5(µg/m³) | 58.40 | 53.70 |
| PM10(µg/m³) | 169.00 | 64.50 |
| NO₂(µg/m³) | 17.10 | 14.10 |
| SO₂(µg/m³) | 7.70 | 7.40 |
| O₃(µg/m³) | 58.00 | 94.00 |
| CO(µg/m³) | 391.00 | 289.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Alwar averaged an AQI of 88 while Silchar averaged 52 — a 36-point (69%) gap, with Alwar the more polluted and Silchar the cleaner of the two. On 683 days when both cities reported, Silchar was cleaner on 627 of them; the average daily gap was 43 AQI points.
Seasonality & days
Alwar peaks in November, while Silchar peaks in February. Alwar logged 0% Severe days and 70.2% Good-or-Satisfactory days; Silchar was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Alwar 97 days, Silchar 87 days.
Year-over-year progress
Alwar has improved by 125 AQI points (58.7%) from 2017 to 2024; Silchar has worsened by 11 AQI points (26.8%) over the same window. The worst recorded day for Alwar reached AQI 356 at Moti Doongri (RSPCB) on 2017-11-11; Silchar hit AQI 89 at Tarapur (PCBA) on 2023-04-29.
Station-level disparity
Alwar spans 1 CPCB stations with a 0-point spread (min 95, max 95); Silchar spans 1 stations with a 0-point spread (min 47, max 47).
Verdict
🏆 Silchar has better air quality with an AQI of 90 compared to Alwar's 147. That's a significant difference of 57 points.