Haldia vs Ujjain
Side-by-side air quality comparison between Haldia and Ujjain.
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 | Haldia | Ujjain |
|---|---|---|
| PM2.5(µg/m³) | 46.60 | 29.30 |
| PM10(µg/m³) | 51.90 | 46.00 |
| NO₂(µg/m³) | 11.40 | 7.60 |
| SO₂(µg/m³) | 10.40 | 16.00 |
| O₃(µg/m³) | 96.00 | 53.00 |
| CO(µg/m³) | 284.00 | 208.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Haldia averaged an AQI of 90 while Ujjain averaged 116 — a 26-point (29%) gap, with Ujjain the more polluted and Haldia the cleaner of the two. On 607 days when both cities reported, Haldia was cleaner on 497 of them; the average daily gap was 56 AQI points.
Seasonality & days
Haldia peaks in December, while Ujjain peaks in November. Haldia logged 0% Severe days and 65.4% Good-or-Satisfactory days; Ujjain was 0.1% Severe and 33.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Haldia 51 days, Ujjain 67 days.
Year-over-year progress
Haldia has worsened by 8 AQI points (9.8%) from 2023 to 2024; Ujjain has improved by 71 AQI points (38%) over the same window. The worst recorded day for Haldia reached AQI 322 at Priyambada Housing Estate (WBPCB) on 2024-11-26; Ujjain hit AQI 500 at Mahakaleshwar Temple (MPPCB) on 2023-03-10.
Station-level disparity
Haldia spans 1 CPCB stations with a 0-point spread (min 86, max 86); Ujjain spans 1 stations with a 0-point spread (min 131, max 131).
Verdict
🏆 Ujjain has better air quality with an AQI of 49 compared to Haldia's 78.