Chapra vs Nalbāri
Side-by-side air quality comparison between Chapra and Nalbāri.
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 | Chapra | Nalbāri |
|---|---|---|
| PM2.5(µg/m³) | 99.00 | 57.90 |
| PM10(µg/m³) | 115.50 | 64.70 |
| NO₂(µg/m³) | 53.70 | 7.60 |
| SO₂(µg/m³) | 13.70 | 5.20 |
| O₃(µg/m³) | 10.00 | 112.00 |
| CO(µg/m³) | 858.00 | 397.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chapra averaged an AQI of 149 while Nalbāri averaged 129 — a 20-point (16%) gap, with Chapra the more polluted and Nalbāri the cleaner of the two. On 575 days when both cities reported, Nalbāri was cleaner on 421 of them; the average daily gap was 77 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Chapra logged 2.4% Severe days and 26.8% Good-or-Satisfactory days; Nalbāri was 0% Severe and 41% Good-or-Satisfactory. Longest clean-air streaks: Chapra 14 days, Nalbāri 18 days.
Year-over-year progress
Chapra has improved by 181 AQI points (54.8%) from 2021 to 2024; Nalbāri has improved by 72 AQI points (35.8%) over the same window. The worst recorded day for Chapra reached AQI 452 at Darshan Nagar (BSPCB) on 2022-12-20; Nalbāri hit AQI 384 at Bata Chowk (PCBA) on 2024-01-08.
Station-level disparity
Chapra spans 1 CPCB stations with a 0-point spread (min 195, max 195); Nalbāri spans 1 stations with a 0-point spread (min 141, max 141).
Verdict
🏆 Nalbāri has better air quality with an AQI of 97 compared to Chapra's 231. That's a significant difference of 134 points.