Karnal vs Katihar
Side-by-side air quality comparison between Karnal and Katihar.
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 | Karnal | Katihar |
|---|---|---|
| PM2.5(µg/m³) | 130.90 | 105.90 |
| PM10(µg/m³) | 553.20 | 109.00 |
| NO₂(µg/m³) | 43.30 | 25.20 |
| SO₂(µg/m³) | 17.00 | 20.10 |
| O₃(µg/m³) | 43.00 | 67.00 |
| CO(µg/m³) | 906.00 | 727.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Karnal averaged an AQI of 102 while Katihar averaged 123 — a 21-point (21%) gap, with Katihar the more polluted and Karnal the cleaner of the two. On 909 days when both cities reported, Karnal was cleaner on 693 of them; the average daily gap was 90 AQI points.
Seasonality & days
Karnal peaks in November, while Katihar peaks in December. Karnal logged 0.1% Severe days and 46.2% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Karnal 53 days, Katihar 19 days.
Year-over-year progress
Karnal has improved by 71 AQI points (41%) from 2019 to 2024; Katihar has improved by 188 AQI points (60.5%) over the same window. The worst recorded day for Karnal reached AQI 456 at Sector-12 (HSPCB) on 2019-11-03; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Karnal spans 1 CPCB stations with a 0-point spread (min 128, max 128); Katihar spans 1 stations with a 0-point spread (min 185, max 185).
Verdict
🏆 Katihar has better air quality with an AQI of 253 compared to Karnal's 473. That's a significant difference of 220 points.