Katihar vs Prayagraj
Side-by-side air quality comparison between Katihar and Prayagraj.
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 | Prayagraj |
|---|---|---|
| PM2.5(µg/m³) | 109.20 | 80.10 |
| PM10(µg/m³) | 114.30 | 101.50 |
| NO₂(µg/m³) | 31.10 | 63.30 |
| SO₂(µg/m³) | 18.30 | 16.20 |
| O₃(µg/m³) | 43.00 | 1.00 |
| CO(µg/m³) | 770.00 | 275.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Katihar averaged an AQI of 123 while Prayagraj averaged 80 — a 43-point (54%) gap, with Katihar the more polluted and Prayagraj the cleaner of the two. On 636 days when both cities reported, Prayagraj was cleaner on 435 of them; the average daily gap was 77 AQI points.
Seasonality & days
Katihar peaks in December, while Prayagraj peaks in November. Katihar logged 3.1% Severe days and 26.9% Good-or-Satisfactory days; Prayagraj was 0.2% Severe and 48% Good-or-Satisfactory. Longest clean-air streaks: Katihar 19 days, Prayagraj 69 days.
Year-over-year progress
Katihar has improved by 188 AQI points (60.5%) from 2021 to 2024; Prayagraj has improved by 42 AQI points (34.4%) over the same window. The worst recorded day for Katihar reached AQI 465 at Mirchaibari (BSPCB) on 2023-01-23; Prayagraj hit AQI 416 at Nagar Nigam (UPPCB) on 2021-11-08.
Station-level disparity
Katihar spans 1 CPCB stations with a 0-point spread (min 185, max 185); Prayagraj spans 3 stations with a 9-point spread (min 96, max 105).
Verdict
🏆 Prayagraj has better air quality with an AQI of 167 compared to Katihar's 264. That's a significant difference of 97 points.