Howrah vs Noida
Side-by-side air quality comparison between Howrah and Noida.
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 | Noida |
|---|---|---|
| PM2.5(µg/m³) | 68.70 | 67.50 |
| PM10(µg/m³) | 72.60 | 134.10 |
| NO₂(µg/m³) | 22.20 | 34.90 |
| SO₂(µg/m³) | 11.50 | 17.50 |
| O₃(µg/m³) | 55.00 | 48.00 |
| CO(µg/m³) | 360.00 | 554.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Howrah averaged an AQI of 126 while Noida averaged 182 — a 56-point (44%) gap, with Noida the more polluted and Howrah the cleaner of the two. On 2244 days when both cities reported, Howrah was cleaner on 1809 of them; the average daily gap was 95 AQI points.
Seasonality & days
Howrah peaks in December, while Noida peaks in November. Howrah logged 0.7% Severe days and 48.7% Good-or-Satisfactory days; Noida was 8.9% Severe and 16.5% Good-or-Satisfactory. Longest clean-air streaks: Howrah 120 days, Noida 14 days.
Year-over-year progress
Howrah has improved by 32 AQI points (20.3%) from 2016 to 2024; Noida has improved by 79 AQI points (30.3%) over the same window. The worst recorded day for Howrah reached AQI 500 at Ghusuri (WBPCB) on 2017-04-15; Noida hit AQI 500 at Sector-1 (UPPCB) on 2019-11-01.
Station-level disparity
Howrah spans 5 CPCB stations with a 116-point spread (min 111, max 227); Noida spans 4 stations with a 15-point spread (min 195, max 210).
Verdict
🏆 Noida has better air quality with an AQI of 126 compared to Howrah's 130.