Prayagraj vs Silchar
Side-by-side air quality comparison between Prayagraj 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 | Prayagraj | Silchar |
|---|---|---|
| PM2.5(µg/m³) | 80.10 | 53.70 |
| PM10(µg/m³) | 101.50 | 64.50 |
| NO₂(µg/m³) | 63.30 | 14.10 |
| SO₂(µg/m³) | 16.20 | 7.40 |
| O₃(µg/m³) | 1.00 | 94.00 |
| CO(µg/m³) | 275.00 | 289.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Prayagraj averaged an AQI of 80 while Silchar averaged 52 — a 28-point (54%) gap, with Prayagraj the more polluted and Silchar the cleaner of the two. On 351 days when both cities reported, Silchar was cleaner on 299 of them; the average daily gap was 45 AQI points.
Seasonality & days
Prayagraj peaks in November, while Silchar peaks in February. Prayagraj logged 0.2% Severe days and 48% Good-or-Satisfactory days; Silchar was 0% Severe and 100% Good-or-Satisfactory. Longest clean-air streaks: Prayagraj 69 days, Silchar 87 days.
Year-over-year progress
Prayagraj has improved by 42 AQI points (34.4%) from 2021 to 2024; Silchar has worsened by 11 AQI points (26.8%) over the same window. The worst recorded day for Prayagraj reached AQI 416 at Nagar Nigam (UPPCB) on 2021-11-08; Silchar hit AQI 89 at Tarapur (PCBA) on 2023-04-29.
Station-level disparity
Prayagraj spans 3 CPCB stations with a 9-point spread (min 96, max 105); 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 Prayagraj's 167. That's a significant difference of 77 points.