Charkhi Dādri vs Ramanathapuram
Side-by-side air quality comparison between Charkhi Dādri 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 | Charkhi Dādri | Ramanathapuram |
|---|---|---|
| PM2.5(µg/m³) | 64.70 | 5.60 |
| PM10(µg/m³) | 194.20 | 8.30 |
| NO₂(µg/m³) | 12.60 | 4.20 |
| SO₂(µg/m³) | 9.40 | 4.00 |
| O₃(µg/m³) | 83.00 | 31.00 |
| CO(µg/m³) | 490.00 | 143.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Charkhi Dādri averaged an AQI of 145 while Ramanathapuram averaged 42 — a 103-point (245%) gap, with Charkhi Dādri the more polluted and Ramanathapuram the cleaner of the two. On 695 days when both cities reported, Ramanathapuram was cleaner on 642 of them; the average daily gap was 111 AQI points.
Seasonality & days
Charkhi Dādri peaks in November, while Ramanathapuram peaks in January. Charkhi Dādri logged 0.7% Severe days and 28% Good-or-Satisfactory days; Ramanathapuram was 0% Severe and 94.4% Good-or-Satisfactory. Longest clean-air streaks: Charkhi Dādri 48 days, Ramanathapuram 46 days.
Year-over-year progress
Charkhi Dādri has improved by 51 AQI points (26%) from 2020 to 2024; Ramanathapuram has improved by 18 AQI points (30%) over the same window. The worst recorded day for Charkhi Dādri reached AQI 470 at Mini Secretariat Charkhi (HSPCB) on 2021-11-12; Ramanathapuram hit AQI 246 at Chalai Bazaar (TNPCB) on 2022-12-07.
Station-level disparity
Charkhi Dādri spans 1 CPCB stations with a 0-point spread (min 162, max 162); Ramanathapuram spans 1 stations with a 0-point spread (min 48, max 48).
Verdict
🏆 Ramanathapuram has better air quality with an AQI of 9 compared to Charkhi Dādri's 163. That's a significant difference of 154 points.