Hisar vs Howrah
Side-by-side air quality comparison between Hisar 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 | Hisar | Howrah |
|---|---|---|
| PM2.5(µg/m³) | 75.70 | 64.70 |
| PM10(µg/m³) | 224.40 | 69.40 |
| NO₂(µg/m³) | 34.70 | 18.10 |
| SO₂(µg/m³) | 8.30 | 13.10 |
| O₃(µg/m³) | 43.00 | 86.00 |
| CO(µg/m³) | 508.00 | 421.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hisar averaged an AQI of 136 while Howrah averaged 126 — a 10-point (8%) gap, with Hisar the more polluted and Howrah the cleaner of the two. On 1672 days when both cities reported, Howrah was cleaner on 954 of them; the average daily gap was 77 AQI points.
Seasonality & days
Hisar peaks in November, while Howrah peaks in December. Hisar logged 1.6% Severe days and 29.700000000000003% Good-or-Satisfactory days; Howrah was 0.7% Severe and 48.7% Good-or-Satisfactory. Longest clean-air streaks: Hisar 34 days, Howrah 120 days.
Year-over-year progress
Hisar has improved by 39 AQI points (22.3%) from 2019 to 2024; Howrah has improved by 32 AQI points (20.3%) over the same window. The worst recorded day for Hisar reached AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02; Howrah hit AQI 500 at Ghusuri (WBPCB) on 2017-04-15.
Station-level disparity
Hisar spans 1 CPCB stations with a 0-point spread (min 168, max 168); Howrah spans 5 stations with a 116-point spread (min 111, max 227).
Verdict
🏆 Howrah has better air quality with an AQI of 117 compared to Hisar's 183. That's a significant difference of 66 points.