Cuddalore vs Prayagraj
Side-by-side air quality comparison between Cuddalore and Prayagraj.
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 | Cuddalore | Prayagraj |
|---|---|---|
| PM2.5(µg/m³) | 15.00 | 61.00 |
| PM10(µg/m³) | 18.20 | 73.80 |
| NO₂(µg/m³) | 15.90 | 45.90 |
| SO₂(µg/m³) | 10.00 | 15.60 |
| O₃(µg/m³) | 39.00 | 36.00 |
| CO(µg/m³) | 353.00 | 240.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Cuddalore averaged an AQI of 52 while Prayagraj averaged 80 — a 28-point (54%) gap, with Prayagraj the more polluted and Cuddalore the cleaner of the two. On 318 days when both cities reported, Cuddalore was cleaner on 268 of them; the average daily gap was 44 AQI points.
Seasonality & days
Cuddalore peaks in January, while Prayagraj peaks in November. Cuddalore logged 0% Severe days and 90.6% Good-or-Satisfactory days; Prayagraj was 0.2% Severe and 48% Good-or-Satisfactory. Longest clean-air streaks: Cuddalore 34 days, Prayagraj 69 days.
Year-over-year progress
The worst recorded day for Cuddalore reached AQI 329 at Kudikadu (TNPCB) on 2024-04-05; Prayagraj hit AQI 416 at Nagar Nigam (UPPCB) on 2021-11-08.
Station-level disparity
Cuddalore spans 2 CPCB stations with a 11-point spread (min 46, max 57); Prayagraj spans 3 stations with a 9-point spread (min 96, max 105).
Verdict
🏆 Cuddalore has better air quality with an AQI of 25 compared to Prayagraj's 104. That's a significant difference of 79 points.