Alwar vs Haldia
Side-by-side air quality comparison between Alwar and Haldia.
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 | Alwar | Haldia |
|---|---|---|
| PM2.5(µg/m³) | 58.70 | 46.60 |
| PM10(µg/m³) | 158.30 | 51.90 |
| NO₂(µg/m³) | 14.30 | 11.40 |
| SO₂(µg/m³) | 8.50 | 10.40 |
| O₃(µg/m³) | 76.00 | 96.00 |
| CO(µg/m³) | 357.00 | 284.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Alwar averaged an AQI of 88 while Haldia averaged 90 — a 2-point (2%) gap, with Haldia the more polluted and Alwar the cleaner of the two. On 692 days when both cities reported, Haldia was cleaner on 429 of them; the average daily gap was 40 AQI points.
Seasonality & days
Alwar peaks in November, while Haldia peaks in December. Alwar logged 0% Severe days and 70.2% Good-or-Satisfactory days; Haldia was 0% Severe and 65.4% Good-or-Satisfactory. Longest clean-air streaks: Alwar 97 days, Haldia 51 days.
Year-over-year progress
Alwar has improved by 125 AQI points (58.7%) from 2017 to 2024; Haldia has worsened by 8 AQI points (9.8%) over the same window. The worst recorded day for Alwar reached AQI 356 at Moti Doongri (RSPCB) on 2017-11-11; Haldia hit AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26.
Station-level disparity
Alwar spans 1 CPCB stations with a 0-point spread (min 95, max 95); Haldia spans 1 stations with a 0-point spread (min 86, max 86).
Verdict
🏆 Haldia has better air quality with an AQI of 78 compared to Alwar's 139. That's a significant difference of 61 points.