Howrah vs Visakhapatnam
Side-by-side air quality comparison between Howrah 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 | Howrah | Visakhapatnam |
|---|---|---|
| PM2.5(µg/m³) | 64.70 | 32.20 |
| PM10(µg/m³) | 69.40 | 37.10 |
| NO₂(µg/m³) | 18.10 | 24.00 |
| SO₂(µg/m³) | 13.10 | 44.60 |
| O₃(µg/m³) | 86.00 | 84.00 |
| CO(µg/m³) | 421.00 | 514.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Howrah averaged an AQI of 126 while Visakhapatnam averaged 110 — a 16-point (15%) gap, with Howrah the more polluted and Visakhapatnam the cleaner of the two. On 2128 days when both cities reported, Visakhapatnam was cleaner on 1263 of them; the average daily gap was 70 AQI points.
Seasonality & days
Howrah peaks in December, while Visakhapatnam peaks in January. Howrah logged 0.7% Severe days and 48.7% Good-or-Satisfactory days; Visakhapatnam was 0% Severe and 50.1% Good-or-Satisfactory. Longest clean-air streaks: Howrah 120 days, Visakhapatnam 27 days.
Year-over-year progress
Howrah has improved by 32 AQI points (20.3%) from 2016 to 2024; Visakhapatnam has worsened by 15 AQI points (15.8%) over the same window. The worst recorded day for Howrah reached AQI 500 at Ghusuri (WBPCB) on 2017-04-15; Visakhapatnam hit AQI 341 at GVM Corporation (APPCB) on 2019-01-14.
Station-level disparity
Howrah spans 5 CPCB stations with a 116-point spread (min 111, max 227); Visakhapatnam spans 1 stations with a 0-point spread (min 111, max 111).
Verdict
🏆 Visakhapatnam has better air quality with an AQI of 55 compared to Howrah's 117. That's a significant difference of 62 points.