Katihar vs Tonk
Side-by-side air quality comparison between Katihar and Tonk.
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 | Tonk |
|---|---|---|
| PM2.5(µg/m³) | 109.20 | 34.90 |
| PM10(µg/m³) | 114.30 | 75.90 |
| NO₂(µg/m³) | 31.10 | 14.10 |
| SO₂(µg/m³) | 18.30 | 4.50 |
| O₃(µg/m³) | 43.00 | 38.00 |
| CO(µg/m³) | 770.00 | 239.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Katihar averaged an AQI of 123 while Tonk averaged 142 — a 19-point (15%) gap, with Tonk the more polluted and Katihar the cleaner of the two. On 515 days when both cities reported, Tonk was cleaner on 263 of them; the average daily gap was 56 AQI points.
Seasonality & days
Katihar peaks in December, while Tonk peaks in November. Katihar logged 3.1% Severe days and 26.9% Good-or-Satisfactory days; Tonk was 0% Severe and 28.200000000000003% Good-or-Satisfactory. Longest clean-air streaks: Katihar 19 days, Tonk 11 days.
Year-over-year progress
Katihar has improved by 188 AQI points (60.5%) from 2021 to 2024; Tonk has improved by 14 AQI points (9%) over the same window. The worst recorded day for Katihar reached AQI 465 at Mirchaibari (BSPCB) on 2023-01-23; Tonk hit AQI 368 at Shastri Nagar (RSPCB) on 2023-11-17.
Station-level disparity
Katihar spans 1 CPCB stations with a 0-point spread (min 185, max 185); Tonk spans 1 stations with a 0-point spread (min 148, max 148).
Verdict
🏆 Tonk has better air quality with an AQI of 76 compared to Katihar's 264. That's a significant difference of 188 points.