Bidar vs Katihar
Side-by-side air quality comparison between Bidar 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 | Bidar | Katihar |
|---|---|---|
| PM2.5(µg/m³) | 18.40 | 109.20 |
| PM10(µg/m³) | 27.50 | 114.30 |
| NO₂(µg/m³) | 10.40 | 31.10 |
| SO₂(µg/m³) | 2.80 | 18.30 |
| O₃(µg/m³) | 59.00 | 43.00 |
| CO(µg/m³) | 208.00 | 770.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bidar averaged an AQI of 85 while Katihar averaged 123 — a 38-point (45%) gap, with Katihar the more polluted and Bidar the cleaner of the two. On 546 days when both cities reported, Bidar was cleaner on 464 of them; the average daily gap was 123 AQI points.
Seasonality & days
Bidar peaks in January, while Katihar peaks in December. Bidar logged 0.1% Severe days and 72.5% Good-or-Satisfactory days; Katihar was 3.1% Severe and 26.9% Good-or-Satisfactory. Longest clean-air streaks: Bidar 24 days, Katihar 19 days.
Year-over-year progress
Bidar has worsened by 1 AQI points (1.2%) from 2021 to 2024; Katihar has improved by 188 AQI points (60.5%) over the same window. The worst recorded day for Bidar reached AQI 437 at Naubad (KSPCB) on 2022-01-25; Katihar hit AQI 465 at Mirchaibari (BSPCB) on 2023-01-23.
Station-level disparity
Bidar spans 1 CPCB stations with a 0-point spread (min 84, max 84); Katihar spans 1 stations with a 0-point spread (min 185, max 185).
Verdict
🏆 Bidar has better air quality with an AQI of 31 compared to Katihar's 264. That's a significant difference of 233 points.