Araria vs Kolkata
Side-by-side air quality comparison between Araria and Kolkata.
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 | Araria | Kolkata |
|---|---|---|
| PM2.5(µg/m³) | 98.70 | 64.70 |
| PM10(µg/m³) | 101.70 | 69.40 |
| NO₂(µg/m³) | 19.60 | 18.10 |
| SO₂(µg/m³) | 13.30 | 13.10 |
| O₃(µg/m³) | 69.00 | 86.00 |
| CO(µg/m³) | 760.00 | 428.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Araria averaged an AQI of 167 while Kolkata averaged 101 — a 66-point (65%) gap, with Araria the more polluted and Kolkata the cleaner of the two. On 535 days when both cities reported, Kolkata was cleaner on 298 of them; the average daily gap was 52 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Araria logged 0% Severe days and 28.5% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Araria 14 days, Kolkata 75 days.
Year-over-year progress
Araria has improved by 61 AQI points (26.8%) from 2021 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Araria reached AQI 399 at Kharahiya Basti (BSPCB) on 2024-01-31; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Araria spans 1 CPCB stations with a 0-point spread (min 173, max 173); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).
Verdict
🏆 Kolkata has better air quality with an AQI of 117 compared to Araria's 230. That's a significant difference of 113 points.