Katihar vs Lucknow
Side-by-side air quality comparison between Katihar and Lucknow.
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 | Lucknow |
|---|---|---|
| PM2.5(µg/m³) | 109.20 | 107.30 |
| PM10(µg/m³) | 114.30 | 189.50 |
| NO₂(µg/m³) | 31.10 | 83.80 |
| SO₂(µg/m³) | 18.30 | 28.40 |
| O₃(µg/m³) | 43.00 | 0.00 |
| CO(µg/m³) | 770.00 | 474.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Katihar averaged an AQI of 123 while Lucknow averaged 127 — a 4-point (3%) gap, with Lucknow the more polluted and Katihar the cleaner of the two. On 638 days when both cities reported, Katihar was cleaner on 378 of them; the average daily gap was 78 AQI points.
Seasonality & days
Katihar peaks in December, while Lucknow peaks in November. Katihar logged 3.1% Severe days and 26.9% Good-or-Satisfactory days; Lucknow was 6.6% Severe and 19.4% Good-or-Satisfactory. Longest clean-air streaks: Katihar 19 days, Lucknow 45 days.
Year-over-year progress
Katihar has improved by 188 AQI points (60.5%) from 2021 to 2024; Lucknow has improved by 89 AQI points (41.2%) over the same window. The worst recorded day for Katihar reached AQI 465 at Mirchaibari (BSPCB) on 2023-01-23; Lucknow hit AQI 500 at Lalbagh (CPCB) on 2017-11-09.
Station-level disparity
Katihar spans 1 CPCB stations with a 0-point spread (min 185, max 185); Lucknow spans 7 stations with a 119-point spread (min 97, max 216).
Verdict
🏆 Lucknow has better air quality with an AQI of 258 compared to Katihar's 264.