Katihar vs Solapur
Side-by-side air quality comparison between Katihar and Solapur.
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 | Solapur |
|---|---|---|
| PM2.5(µg/m³) | 109.20 | 13.50 |
| PM10(µg/m³) | 114.30 | 22.10 |
| NO₂(µg/m³) | 31.10 | 6.90 |
| SO₂(µg/m³) | 18.30 | 2.70 |
| O₃(µg/m³) | 43.00 | 46.00 |
| CO(µg/m³) | 770.00 | 157.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Katihar averaged an AQI of 123 while Solapur averaged 96 — a 27-point (28%) gap, with Katihar the more polluted and Solapur the cleaner of the two. On 523 days when both cities reported, Solapur was cleaner on 330 of them; the average daily gap was 86 AQI points.
Seasonality & days
Katihar peaks in December, while Solapur peaks in March. Katihar logged 3.1% Severe days and 26.9% Good-or-Satisfactory days; Solapur was 0% Severe and 52.7% Good-or-Satisfactory. Longest clean-air streaks: Katihar 19 days, Solapur 61 days.
Year-over-year progress
Katihar has improved by 188 AQI points (60.5%) from 2021 to 2024; Solapur has improved by 45 AQI points (31.9%) over the same window. The worst recorded day for Katihar reached AQI 465 at Mirchaibari (BSPCB) on 2023-01-23; Solapur hit AQI 266 at Solapur (MPCB) on 2018-03-03.
Station-level disparity
Katihar spans 1 CPCB stations with a 0-point spread (min 185, max 185); Solapur spans 3 stations with a 10-point spread (min 88, max 98).
Verdict
🏆 Solapur has better air quality with an AQI of 23 compared to Katihar's 264. That's a significant difference of 241 points.