Saharsa vs Tonk
Side-by-side air quality comparison between Saharsa 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 | Saharsa | Tonk |
|---|---|---|
| PM2.5(µg/m³) | 100.60 | 27.80 |
| PM10(µg/m³) | 107.10 | 53.10 |
| NO₂(µg/m³) | 34.10 | 9.00 |
| SO₂(µg/m³) | 11.80 | 4.10 |
| O₃(µg/m³) | 30.00 | 47.00 |
| CO(µg/m³) | 723.00 | 206.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Saharsa averaged an AQI of 139 while Tonk averaged 142 — a 3-point (2%) gap, with Tonk the more polluted and Saharsa the cleaner of the two. On 513 days when both cities reported, Tonk was cleaner on 265 of them; the average daily gap was 68 AQI points.
Seasonality & days
Saharsa peaks in January, while Tonk peaks in November. Saharsa logged 1.4% Severe days and 28.4% Good-or-Satisfactory days; Tonk was 0% Severe and 28.200000000000003% Good-or-Satisfactory. Longest clean-air streaks: Saharsa 20 days, Tonk 11 days.
Year-over-year progress
Saharsa has improved by 139 AQI points (50%) from 2021 to 2024; Tonk has improved by 14 AQI points (9%) over the same window. The worst recorded day for Saharsa reached AQI 454 at Police Line (BSPCB) on 2022-12-13; Tonk hit AQI 368 at Shastri Nagar (RSPCB) on 2023-11-17.
Station-level disparity
Saharsa spans 1 CPCB stations with a 0-point spread (min 188, max 188); Tonk spans 1 stations with a 0-point spread (min 148, max 148).
Verdict
🏆 Tonk has better air quality with an AQI of 54 compared to Saharsa's 236. That's a significant difference of 182 points.