Katihar vs Rohtak
Side-by-side air quality comparison between Katihar and Rohtak.
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 | Katihar | Rohtak |
|---|---|---|
| PM2.5(µg/m³) | 105.90 | 71.00 |
| PM10(µg/m³) | 109.00 | 162.50 |
| NO₂(µg/m³) | 25.20 | 24.10 |
| SO₂(µg/m³) | 20.10 | 15.90 |
| O₃(µg/m³) | 67.00 | 69.00 |
| CO(µg/m³) | 727.00 | 618.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Katihar averaged an AQI of 123 while Rohtak averaged 148 — a 25-point (20%) gap, with Rohtak the more polluted and Katihar the cleaner of the two. On 901 days when both cities reported, Rohtak was cleaner on 556 of them; the average daily gap was 90 AQI points.
Seasonality & days
Katihar peaks in December, while Rohtak peaks in November. Katihar logged 3.1% Severe days and 26.9% Good-or-Satisfactory days; Rohtak was 1.1% Severe and 36.599999999999994% Good-or-Satisfactory. Longest clean-air streaks: Katihar 19 days, Rohtak 45 days.
Year-over-year progress
Katihar has improved by 188 AQI points (60.5%) from 2021 to 2024; Rohtak has improved by 123 AQI points (45.4%) over the same window. The worst recorded day for Katihar reached AQI 465 at Mirchaibari (BSPCB) on 2023-01-23; Rohtak hit AQI 498 at MD University (HSPCB) on 2019-11-03.
Station-level disparity
Katihar spans 1 CPCB stations with a 0-point spread (min 185, max 185); Rohtak spans 1 stations with a 0-point spread (min 159, max 159).
Verdict
🏆 Rohtak has better air quality with an AQI of 142 compared to Katihar's 253. That's a significant difference of 111 points.