Charkhi Dādri vs Howrah
Side-by-side air quality comparison between Charkhi Dādri and Howrah.
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 | Charkhi Dādri | Howrah |
|---|---|---|
| PM2.5(µg/m³) | 72.40 | 46.60 |
| PM10(µg/m³) | 333.40 | 54.40 |
| NO₂(µg/m³) | 7.00 | 4.10 |
| SO₂(µg/m³) | 9.10 | 14.60 |
| O₃(µg/m³) | 135.00 | 173.00 |
| CO(µg/m³) | 308.00 | 431.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Charkhi Dādri averaged an AQI of 145 while Howrah averaged 126 — a 19-point (15%) gap, with Charkhi Dādri the more polluted and Howrah the cleaner of the two. On 1167 days when both cities reported, Howrah was cleaner on 665 of them; the average daily gap was 84 AQI points.
Seasonality & days
Charkhi Dādri peaks in November, while Howrah peaks in December. Charkhi Dādri logged 0.7% Severe days and 28% Good-or-Satisfactory days; Howrah was 0.7% Severe and 48.7% Good-or-Satisfactory. Longest clean-air streaks: Charkhi Dādri 48 days, Howrah 120 days.
Year-over-year progress
Charkhi Dādri has improved by 51 AQI points (26%) from 2020 to 2024; Howrah has improved by 32 AQI points (20.3%) over the same window. The worst recorded day for Charkhi Dādri reached AQI 470 at Mini Secretariat Charkhi (HSPCB) on 2021-11-12; Howrah hit AQI 500 at Ghusuri (WBPCB) on 2017-04-15.
Station-level disparity
Charkhi Dādri spans 1 CPCB stations with a 0-point spread (min 162, max 162); Howrah spans 5 stations with a 116-point spread (min 111, max 227).
Verdict
🏆 Howrah has better air quality with an AQI of 78 compared to Charkhi Dādri's 284. That's a significant difference of 206 points.