Kozhikode vs Purnia
Side-by-side air quality comparison between Kozhikode and Purnia.
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 | Kozhikode | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 5.60 | 88.20 |
| PM10(µg/m³) | 13.30 | 98.70 |
| NO₂(µg/m³) | 0.60 | 2.30 |
| SO₂(µg/m³) | 0.30 | 24.60 |
| O₃(µg/m³) | 63.00 | 239.00 |
| CO(µg/m³) | 135.00 | 359.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2023, Kozhikode averaged an AQI of 78 while Purnia averaged 133 — a 55-point (71%) gap, with Purnia the more polluted and Kozhikode the cleaner of the two. On 327 days when both cities reported, Kozhikode was cleaner on 309 of them; the average daily gap was 143 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Kozhikode logged 0.1% Severe days and 99% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Kozhikode 83 days, Purnia 14 days.
Year-over-year progress
Kozhikode has worsened by 29 AQI points (59.2%) from 2020 to 2023; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Kozhikode reached AQI 417 at Palayam Kozhikode (PCB) on 2021-01-25; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Kozhikode spans 1 CPCB stations with a 0-point spread (min 59, max 59); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Kozhikode has better air quality with an AQI of 13 compared to Purnia's 194. That's a significant difference of 181 points.