Ambala vs Katihar
Side-by-side air quality comparison between Ambala 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 | Ambala | Katihar |
|---|---|---|
| PM2.5(µg/m³) | 45.30 | 112.00 |
| PM10(µg/m³) | 93.40 | 115.70 |
| NO₂(µg/m³) | 17.20 | 31.10 |
| SO₂(µg/m³) | 10.80 | 18.40 |
| O₃(µg/m³) | 76.00 | 42.00 |
| CO(µg/m³) | 559.00 | 766.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ambala averaged an AQI of 94 while Katihar averaged 123 — a 29-point (31%) gap, with Katihar the more polluted and Ambala the cleaner of the two. On 873 days when both cities reported, Ambala was cleaner on 606 of them; the average daily gap was 89 AQI points.
Seasonality & days
Ambala peaks in November, while Katihar peaks in December. Ambala logged 0.2% Severe days and 46.5% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Ambala 44 days, Katihar 19 days.
Year-over-year progress
Ambala has improved by 52 AQI points (35.6%) from 2019 to 2024; Katihar has improved by 188 AQI points (60.5%) over the same window. The worst recorded day for Ambala reached AQI 452 at Patti Mehar (HSPCB) on 2020-11-04; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Ambala spans 1 CPCB stations with a 0-point spread (min 126, max 126); Katihar spans 1 stations with a 0-point spread (min 185, max 185).
Verdict
🏆 Ambala has better air quality with an AQI of 94 compared to Katihar's 274. That's a significant difference of 180 points.