Hapur vs Ramanathapuram
Side-by-side air quality comparison between Hapur and Ramanathapuram.
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 | Hapur | Ramanathapuram |
|---|---|---|
| PM2.5(µg/m³) | 71.90 | 6.10 |
| PM10(µg/m³) | 97.30 | 9.30 |
| NO₂(µg/m³) | 36.60 | 5.10 |
| SO₂(µg/m³) | 11.50 | 4.20 |
| O₃(µg/m³) | 36.00 | 32.00 |
| CO(µg/m³) | 589.00 | 134.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hapur averaged an AQI of 142 while Ramanathapuram averaged 42 — a 100-point (238%) gap, with Hapur the more polluted and Ramanathapuram the cleaner of the two. On 679 days when both cities reported, Ramanathapuram was cleaner on 589 of them; the average daily gap was 96 AQI points.
Seasonality & days
Hapur peaks in November, while Ramanathapuram peaks in January. Hapur logged 1.9% Severe days and 36.2% Good-or-Satisfactory days; Ramanathapuram was 0% Severe and 94.4% Good-or-Satisfactory. Longest clean-air streaks: Hapur 55 days, Ramanathapuram 46 days.
Year-over-year progress
Hapur has improved by 197 AQI points (58.1%) from 2018 to 2024; Ramanathapuram has improved by 18 AQI points (30%) over the same window. The worst recorded day for Hapur reached AQI 477 at Anand Vihar (UPPCB) on 2019-10-31; Ramanathapuram hit AQI 246 at Chalai Bazaar (TNPCB) on 2022-12-07.
Station-level disparity
Hapur spans 1 CPCB stations with a 0-point spread (min 159, max 159); Ramanathapuram spans 1 stations with a 0-point spread (min 48, max 48).
Verdict
🏆 Ramanathapuram has better air quality with an AQI of 10 compared to Hapur's 140. That's a significant difference of 130 points.