Bilaspur vs Katihar
Side-by-side air quality comparison between Bilaspur 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 | Bilaspur | Katihar |
|---|---|---|
| PM2.5(µg/m³) | 34.80 | 109.20 |
| PM10(µg/m³) | 43.70 | 114.30 |
| NO₂(µg/m³) | 28.50 | 31.10 |
| SO₂(µg/m³) | 18.50 | 18.30 |
| O₃(µg/m³) | 38.00 | 43.00 |
| CO(µg/m³) | 477.00 | 770.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bilaspur averaged an AQI of 61 while Katihar averaged 123 — a 62-point (102%) gap, with Katihar the more polluted and Bilaspur the cleaner of the two. On 806 days when both cities reported, Bilaspur was cleaner on 720 of them; the average daily gap was 115 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Bilaspur logged 0% Severe days and 88% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Bilaspur 66 days, Katihar 19 days.
Year-over-year progress
Bilaspur has improved by 22 AQI points (26.5%) from 2021 to 2024; Katihar has improved by 188 AQI points (60.5%) over the same window. The worst recorded day for Bilaspur reached AQI 259 at Mangala (NTPC) on 2023-03-09; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Bilaspur spans 1 CPCB stations with a 0-point spread (min 69, max 69); Katihar spans 1 stations with a 0-point spread (min 185, max 185).
Verdict
🏆 Bilaspur has better air quality with an AQI of 59 compared to Katihar's 264. That's a significant difference of 205 points.