Hisar vs Siliguri
Side-by-side air quality comparison between Hisar and Siliguri.
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 | Siliguri |
|---|---|---|
| PM2.5(µg/m³) | 75.00 | 82.20 |
| PM10(µg/m³) | 231.00 | 105.70 |
| NO₂(µg/m³) | 42.00 | 15.40 |
| SO₂(µg/m³) | 7.20 | 6.50 |
| O₃(µg/m³) | 25.00 | 95.00 |
| CO(µg/m³) | 573.00 | 539.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hisar averaged an AQI of 136 while Siliguri averaged 81 — a 55-point (68%) gap, with Hisar the more polluted and Siliguri the cleaner of the two. On 1467 days when both cities reported, Siliguri was cleaner on 1173 of them; the average daily gap was 90 AQI points.
Seasonality & days
Hisar peaks in November, while Siliguri peaks in February. Hisar logged 1.6% Severe days and 29.700000000000003% Good-or-Satisfactory days; Siliguri was 0.1% Severe and 61.8% Good-or-Satisfactory. Longest clean-air streaks: Hisar 34 days, Siliguri 180 days.
Year-over-year progress
Hisar has improved by 39 AQI points (22.3%) from 2019 to 2024; Siliguri has improved by 39 AQI points (32.5%) over the same window. The worst recorded day for Hisar reached AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02; Siliguri hit AQI 415 at Ward-32 Bapupara (WBPCB) on 2018-02-08.
Station-level disparity
Hisar spans 1 CPCB stations with a 0-point spread (min 168, max 168); Siliguri spans 1 stations with a 0-point spread (min 107, max 107).
Verdict
🏆 Siliguri has better air quality with an AQI of 174 compared to Hisar's 187.