Alwar vs Thrissur
Side-by-side air quality comparison between Alwar and Thrissur.
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 | Alwar | Thrissur |
|---|---|---|
| PM2.5(µg/m³) | 58.70 | 8.60 |
| PM10(µg/m³) | 158.30 | 10.10 |
| NO₂(µg/m³) | 14.30 | 9.80 |
| SO₂(µg/m³) | 8.50 | 3.30 |
| O₃(µg/m³) | 76.00 | 29.00 |
| CO(µg/m³) | 357.00 | 163.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Alwar averaged an AQI of 88 while Thrissur averaged 57 — a 31-point (54%) gap, with Alwar the more polluted and Thrissur the cleaner of the two. On 1152 days when both cities reported, Thrissur was cleaner on 852 of them; the average daily gap was 35 AQI points.
Seasonality & days
Alwar peaks in November, while Thrissur peaks in February. Alwar logged 0% Severe days and 70.2% Good-or-Satisfactory days; Thrissur was 0% Severe and 88.4% Good-or-Satisfactory. Longest clean-air streaks: Alwar 97 days, Thrissur 52 days.
Year-over-year progress
Alwar has improved by 125 AQI points (58.7%) from 2017 to 2024; Thrissur has improved by 21 AQI points (26.9%) over the same window. The worst recorded day for Alwar reached AQI 356 at Moti Doongri (RSPCB) on 2017-11-11; Thrissur hit AQI 181 at Corporation Ground Thrissur (PCB) on 2023-01-09.
Station-level disparity
Alwar spans 1 CPCB stations with a 0-point spread (min 95, max 95); Thrissur spans 1 stations with a 0-point spread (min 68, max 68).
Verdict
🏆 Thrissur has better air quality with an AQI of 14 compared to Alwar's 139. That's a significant difference of 125 points.