Aizawl vs Katihar
Side-by-side air quality comparison between Aizawl 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 | Aizawl | Katihar |
|---|---|---|
| PM2.5(µg/m³) | 23.60 | 88.20 |
| PM10(µg/m³) | 35.70 | 98.70 |
| NO₂(µg/m³) | 0.40 | 2.30 |
| SO₂(µg/m³) | 2.30 | 24.60 |
| O₃(µg/m³) | 108.00 | 239.00 |
| CO(µg/m³) | 216.00 | 335.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Aizawl averaged an AQI of 46 while Katihar averaged 123 — a 77-point (167%) gap, with Katihar the more polluted and Aizawl the cleaner of the two. On 864 days when both cities reported, Aizawl was cleaner on 839 of them; the average daily gap was 144 AQI points.
Seasonality & days
Aizawl peaks in March, while Katihar peaks in December. Aizawl logged 0% Severe days and 94.2% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Aizawl 76 days, Katihar 19 days.
Year-over-year progress
Aizawl has worsened by 16 AQI points (53.3%) from 2020 to 2024; Katihar has improved by 188 AQI points (60.5%) over the same window. The worst recorded day for Aizawl reached AQI 208 at Sikulpuikawn Aizawl (PCB) on 2021-01-20; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Aizawl spans 1 CPCB stations with a 0-point spread (min 43, max 43); Katihar spans 1 stations with a 0-point spread (min 185, max 185).
Verdict
🏆 Aizawl has better air quality with an AQI of 39 compared to Katihar's 194. That's a significant difference of 155 points.