Howrah vs Patiala
Side-by-side air quality comparison between Howrah and Patiala.
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 | Patiala |
|---|---|---|
| PM2.5(µg/m³) | 43.70 | 65.20 |
| PM10(µg/m³) | 51.30 | 280.30 |
| NO₂(µg/m³) | 2.40 | 1.40 |
| SO₂(µg/m³) | 11.70 | 13.10 |
| O₃(µg/m³) | 180.00 | 203.00 |
| CO(µg/m³) | 334.00 | 317.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Howrah averaged an AQI of 126 while Patiala averaged 103 — a 23-point (22%) gap, with Howrah the more polluted and Patiala the cleaner of the two. On 2078 days when both cities reported, Patiala was cleaner on 1333 of them; the average daily gap was 82 AQI points.
Seasonality & days
Howrah peaks in December, while Patiala peaks in November. Howrah logged 0.7% Severe days and 48.7% Good-or-Satisfactory days; Patiala was 0.1% Severe and 54.8% Good-or-Satisfactory. Longest clean-air streaks: Howrah 120 days, Patiala 86 days.
Year-over-year progress
Howrah has improved by 32 AQI points (20.3%) from 2016 to 2024; Patiala has worsened by 8 AQI points (8.4%) over the same window. The worst recorded day for Howrah reached AQI 500 at Ghusuri (WBPCB) on 2017-04-15; Patiala hit AQI 415 at Model Town (PPCB) on 2019-11-03.
Station-level disparity
Howrah spans 5 CPCB stations with a 116-point spread (min 111, max 227); Patiala spans 1 stations with a 0-point spread (min 104, max 104).
Verdict
🏆 Howrah has better air quality with an AQI of 73 compared to Patiala's 231. That's a significant difference of 158 points.