Howrah vs Sirohi
Side-by-side air quality comparison between Howrah and Sirohi.
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 | Sirohi |
|---|---|---|
| PM2.5(µg/m³) | 71.70 | 19.80 |
| PM10(µg/m³) | 75.70 | 33.50 |
| NO₂(µg/m³) | 22.30 | 5.10 |
| SO₂(µg/m³) | 12.00 | 2.60 |
| O₃(µg/m³) | 60.00 | 50.00 |
| CO(µg/m³) | 390.00 | 131.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Howrah averaged an AQI of 126 while Sirohi averaged 89 — a 37-point (42%) gap, with Howrah the more polluted and Sirohi the cleaner of the two. On 331 days when both cities reported, Sirohi was cleaner on 256 of them; the average daily gap was 78 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Howrah logged 0.7% Severe days and 48.7% Good-or-Satisfactory days; Sirohi was 0% Severe and 69.2% Good-or-Satisfactory. Longest clean-air streaks: Howrah 120 days, Sirohi 41 days.
Year-over-year progress
Howrah has improved by 32 AQI points (20.3%) from 2016 to 2024; Sirohi has improved by 4 AQI points (4.3%) over the same window. The worst recorded day for Howrah reached AQI 500 at Ghusuri (WBPCB) on 2017-04-15; Sirohi hit AQI 335 at Vedhaynath Colony (RSPCB) on 2024-12-26.
Station-level disparity
Howrah spans 5 CPCB stations with a 116-point spread (min 111, max 227); Sirohi spans 1 stations with a 0-point spread (min 90, max 90).
Verdict
🏆 Sirohi has better air quality with an AQI of 34 compared to Howrah's 140. That's a significant difference of 106 points.