Kolkata vs Sirsa
Side-by-side air quality comparison between Kolkata and Sirsa.
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 | Kolkata | Sirsa |
|---|---|---|
| PM2.5(µg/m³) | 68.70 | 61.00 |
| PM10(µg/m³) | 72.60 | 161.10 |
| NO₂(µg/m³) | 22.20 | 33.30 |
| SO₂(µg/m³) | 11.50 | 7.70 |
| O₃(µg/m³) | 55.00 | 39.00 |
| CO(µg/m³) | 364.00 | 335.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Kolkata averaged an AQI of 101 while Sirsa averaged 115 — a 14-point (14%) gap, with Sirsa the more polluted and Kolkata the cleaner of the two. On 1669 days when both cities reported, Sirsa was cleaner on 860 of them; the average daily gap was 83 AQI points.
Seasonality & days
Kolkata peaks in January, while Sirsa peaks in November. Kolkata logged 1% Severe days and 47.800000000000004% Good-or-Satisfactory days; Sirsa was 0.5% Severe and 41.300000000000004% Good-or-Satisfactory. Longest clean-air streaks: Kolkata 75 days, Sirsa 40 days.
Year-over-year progress
Kolkata has improved by 76 AQI points (42.9%) from 2017 to 2024; Sirsa has improved by 48 AQI points (29.4%) over the same window. The worst recorded day for Kolkata reached AQI 453 at Rabindra Bharati University (WBPCB) on 2019-01-23; Sirsa hit AQI 462 at F-Block (HSPCB) on 2019-11-01.
Station-level disparity
Kolkata spans 7 CPCB stations with a 56-point spread (min 95, max 151); Sirsa spans 1 stations with a 0-point spread (min 132, max 132).
Verdict
🏆 Kolkata has better air quality with an AQI of 130 compared to Sirsa's 141.