Haldia — AQI Trends
Year-over-year AQI trajectory for Haldia (2023–2024). Based on CPCB station data, 2016–present.
West Bengal · Live Haldia AQI →
Haldia — annual AQI 2023–2024
Year × month heatmap
Worst single days on record
- 2024-11-26Priyambada Housing Estate (WBPCB)322
- 2024-12-06Priyambada Housing Estate (WBPCB)307
- 2024-11-27Priyambada Housing Estate (WBPCB)277
- 2024-12-04Priyambada Housing Estate (WBPCB)269
- 2024-12-05Priyambada Housing Estate (WBPCB)268
- 2024-11-25Priyambada Housing Estate (WBPCB)266
- 2024-12-10Priyambada Housing Estate (WBPCB)265
- 2023-01-25Priyambada Housing Estate (WBPCB)263
- 2024-12-13Priyambada Housing Estate (WBPCB)262
- 2024-12-11Priyambada Housing Estate (WBPCB)258
What the numbers say
Overview
Haldia's AQI moved from 82 in 2023 to 90 in 2024 — a rise of 9.8% over 1 years. The long-run trend is roughly stable, with a regression slope of 0.0 AQI points per year.
The data story
The worst recorded year in Haldia was 2024 at AQI 90, while the best was 2023 at AQI 82. The city has posted 5.3% of all measured days above AQI 200 (the Poor threshold), and its worst recorded single day hit 322 on 26 Nov 2024.
Why this pattern
Haldia's trend has been stable — neither clearly worsening nor clearly improving. That stability often masks underlying growth in emissions being offset by cleaner vehicle technology or weather variability. The NCAP era from 2019 onward is the key policy backdrop; stability here means targets have not yet translated into measurable ground-level change.
What to do with this
For planners and residents, the trend matters as much as today's number. A worsening city needs aggressive source control and personal protection investments like indoor purifiers. An improving city rewards continued policy pressure but still requires caution during peak months. Use the live AQI page for day-to-day decisions and this chart for multi-year context. Year-over-year change of more than 10% in either direction is typically real signal, not noise.