Siliguri vs Visakhapatnam
Side-by-side air quality comparison between Siliguri and Visakhapatnam.
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 | Siliguri | Visakhapatnam |
|---|---|---|
| PM2.5(µg/m³) | 77.80 | 33.60 |
| PM10(µg/m³) | 98.30 | 38.90 |
| NO₂(µg/m³) | 11.30 | 23.30 |
| SO₂(µg/m³) | 6.80 | 49.40 |
| O₃(µg/m³) | 115.00 | 95.00 |
| CO(µg/m³) | 523.00 | 516.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Siliguri averaged an AQI of 81 while Visakhapatnam averaged 110 — a 29-point (36%) gap, with Visakhapatnam the more polluted and Siliguri the cleaner of the two. On 1721 days when both cities reported, Siliguri was cleaner on 1030 of them; the average daily gap was 57 AQI points.
Seasonality & days
Siliguri peaks in February, while Visakhapatnam peaks in January. Siliguri logged 0.1% Severe days and 61.8% Good-or-Satisfactory days; Visakhapatnam was 0% Severe and 50.1% Good-or-Satisfactory. Longest clean-air streaks: Siliguri 180 days, Visakhapatnam 27 days.
Year-over-year progress
Siliguri has improved by 39 AQI points (32.5%) from 2018 to 2024; Visakhapatnam has worsened by 15 AQI points (15.8%) over the same window. The worst recorded day for Siliguri reached AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08; Visakhapatnam hit AQI 341 at GVM Corporation (APPCB) on 2019-01-14.
Station-level disparity
Siliguri spans 1 CPCB stations with a 0-point spread (min 107, max 107); Visakhapatnam spans 1 stations with a 0-point spread (min 111, max 111).
Verdict
🏆 Visakhapatnam has better air quality with an AQI of 57 compared to Siliguri's 160. That's a significant difference of 103 points.