Agartala vs Kolkata
Side-by-side air quality comparison between Agartala 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 | Agartala | Kolkata |
|---|---|---|
| PM2.5(µg/m³) | 36.10 | 64.70 |
| PM10(µg/m³) | 40.20 | 69.40 |
| NO₂(µg/m³) | 18.70 | 18.10 |
| SO₂(µg/m³) | 3.20 | 13.10 |
| O₃(µg/m³) | 46.00 | 86.00 |
| CO(µg/m³) | 265.00 | 428.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Agartala averaged an AQI of 140 while Kolkata averaged 101 — a 39-point (39%) gap, with Agartala the more polluted and Kolkata the cleaner of the two. On 1057 days when both cities reported, Agartala was cleaner on 800 of them; the average daily gap was 61 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Agartala logged 0% Severe days and 52.900000000000006% Good-or-Satisfactory days; Kolkata was 1% Severe and 47.800000000000004% Good-or-Satisfactory. Longest clean-air streaks: Agartala 87 days, Kolkata 75 days.
Year-over-year progress
Agartala has improved by 13 AQI points (8.5%) from 2020 to 2024; Kolkata has improved by 76 AQI points (42.9%) over the same window. The worst recorded day for Agartala reached AQI 364 at Kunjaban Agartala (SPCB) on 2022-12-16; Kolkata hit AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23.
Station-level disparity
Agartala spans 2 CPCB stations with a 10-point spread (min 109, max 119); Kolkata spans 7 stations with a 56-point spread (min 95, max 151).
Verdict
🏆 Agartala has better air quality with an AQI of 61 compared to Kolkata's 117. That's a significant difference of 56 points.