Bareilly vs Kollam
Side-by-side air quality comparison between Bareilly and Kollam.
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 | Bareilly | Kollam |
|---|---|---|
| PM2.5(µg/m³) | 62.60 | 5.50 |
| PM10(µg/m³) | 85.70 | 7.90 |
| NO₂(µg/m³) | 26.50 | 3.80 |
| SO₂(µg/m³) | 8.90 | 1.60 |
| O₃(µg/m³) | 84.00 | 33.00 |
| CO(µg/m³) | 816.00 | 96.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bareilly averaged an AQI of 61 while Kollam averaged 84 — a 23-point (38%) gap, with Kollam the more polluted and Bareilly the cleaner of the two. On 458 days when both cities reported, Kollam was cleaner on 231 of them; the average daily gap was 42 AQI points.
Seasonality & days
Bareilly peaks in November, while Kollam peaks in January. Bareilly logged 0% Severe days and 73.1% Good-or-Satisfactory days; Kollam was 0% Severe and 81% Good-or-Satisfactory. Longest clean-air streaks: Bareilly 51 days, Kollam 65 days.
Year-over-year progress
Bareilly has improved by 50 AQI points (45%) from 2022 to 2024; Kollam has improved by 2 AQI points (2.3%) over the same window. The worst recorded day for Bareilly reached AQI 292 at Rajendra Nagar (UPPCB) on 2022-11-03; Kollam hit AQI 272 at Polayathode Kollam (PCB) on 2024-04-06.
Station-level disparity
Bareilly spans 2 CPCB stations with a 12-point spread (min 71, max 83); Kollam spans 1 stations with a 0-point spread (min 84, max 84).
Verdict
🏆 Kollam has better air quality with an AQI of 9 compared to Bareilly's 110. That's a significant difference of 101 points.