Samastipur vs Tonk
Side-by-side air quality comparison between Samastipur 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 | Samastipur | Tonk |
|---|---|---|
| PM2.5(µg/m³) | 118.70 | 27.80 |
| PM10(µg/m³) | 131.30 | 53.10 |
| NO₂(µg/m³) | 48.30 | 9.00 |
| SO₂(µg/m³) | 20.10 | 4.10 |
| O₃(µg/m³) | 57.00 | 47.00 |
| CO(µg/m³) | 732.00 | 206.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Samastipur averaged an AQI of 134 while Tonk averaged 142 — a 8-point (6%) gap, with Tonk the more polluted and Samastipur the cleaner of the two. On 479 days when both cities reported, Tonk was cleaner on 249 of them; the average daily gap was 67 AQI points.
Seasonality & days
Samastipur peaks in January, while Tonk peaks in November. Samastipur logged 1.4% Severe days and 23.400000000000002% Good-or-Satisfactory days; Tonk was 0% Severe and 28.200000000000003% Good-or-Satisfactory. Longest clean-air streaks: Samastipur 9 days, Tonk 11 days.
Year-over-year progress
Samastipur has improved by 84 AQI points (38.5%) from 2022 to 2024; Tonk has improved by 14 AQI points (9%) over the same window. The worst recorded day for Samastipur reached AQI 459 at DM Office Kasipur (BSPCB) on 2023-01-01; Tonk hit AQI 368 at Shastri Nagar (RSPCB) on 2023-11-17.
Station-level disparity
Samastipur spans 1 CPCB stations with a 0-point spread (min 177, max 177); 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 Samastipur's 296. That's a significant difference of 242 points.