Hisar vs Patna
Side-by-side air quality comparison between Hisar and Patna.
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 | Patna |
|---|---|---|
| PM2.5(µg/m³) | 76.60 | 99.00 |
| PM10(µg/m³) | 237.00 | 111.80 |
| NO₂(µg/m³) | 40.60 | 49.30 |
| SO₂(µg/m³) | 7.30 | 18.10 |
| O₃(µg/m³) | 27.00 | 19.00 |
| CO(µg/m³) | 573.00 | 704.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hisar averaged an AQI of 136 while Patna averaged 172 — a 36-point (26%) gap, with Patna the more polluted and Hisar the cleaner of the two. On 1633 days when both cities reported, Hisar was cleaner on 1174 of them; the average daily gap was 81 AQI points.
Seasonality & days
Hisar peaks in November, while Patna peaks in December. Hisar logged 1.6% Severe days and 29.700000000000003% Good-or-Satisfactory days; Patna was 7.5% Severe and 19.400000000000002% Good-or-Satisfactory. Longest clean-air streaks: Hisar 34 days, Patna 30 days.
Year-over-year progress
Hisar has improved by 39 AQI points (22.3%) from 2019 to 2024; Patna has improved by 40 AQI points (18.9%) over the same window. The worst recorded day for Hisar reached AQI 490 at Urban Estate-II (HSPCB) on 2019-11-02; Patna hit AQI 491 at IGSC Planetarium Complex (BSPCB) on 2016-01-01.
Station-level disparity
Hisar spans 1 CPCB stations with a 0-point spread (min 168, max 168); Patna spans 6 stations with a 39-point spread (min 154, max 193).
Verdict
🏆 Hisar has better air quality with an AQI of 191 compared to Patna's 231.