Hapur vs Katihar
Side-by-side air quality comparison between Hapur 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 | Hapur | Katihar |
|---|---|---|
| PM2.5(µg/m³) | 71.90 | 109.20 |
| PM10(µg/m³) | 97.30 | 114.30 |
| NO₂(µg/m³) | 36.60 | 31.10 |
| SO₂(µg/m³) | 11.50 | 18.30 |
| O₃(µg/m³) | 36.00 | 43.00 |
| CO(µg/m³) | 589.00 | 770.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hapur averaged an AQI of 142 while Katihar averaged 123 — a 19-point (15%) gap, with Hapur the more polluted and Katihar the cleaner of the two. On 919 days when both cities reported, Hapur was cleaner on 567 of them; the average daily gap was 87 AQI points.
Seasonality & days
Hapur peaks in November, while Katihar peaks in December. Hapur logged 1.9% Severe days and 36.2% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Hapur 55 days, Katihar 19 days.
Year-over-year progress
Hapur has improved by 197 AQI points (58.1%) from 2018 to 2024; Katihar has improved by 188 AQI points (60.5%) over the same window. The worst recorded day for Hapur reached AQI 477 at Anand Vihar (UPPCB) on 2019-10-31; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Hapur spans 1 CPCB stations with a 0-point spread (min 159, max 159); Katihar spans 1 stations with a 0-point spread (min 185, max 185).
Verdict
🏆 Hapur has better air quality with an AQI of 140 compared to Katihar's 264. That's a significant difference of 124 points.