Asansol vs Ramanathapuram
Side-by-side air quality comparison between Asansol 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 | Asansol | Ramanathapuram |
|---|---|---|
| PM2.5(µg/m³) | 94.30 | 5.80 |
| PM10(µg/m³) | 100.60 | 8.80 |
| NO₂(µg/m³) | 49.40 | 4.80 |
| SO₂(µg/m³) | 84.00 | 4.10 |
| O₃(µg/m³) | 41.00 | 31.00 |
| CO(µg/m³) | 775.00 | 141.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Asansol averaged an AQI of 145 while Ramanathapuram averaged 42 — a 103-point (245%) gap, with Asansol the more polluted and Ramanathapuram the cleaner of the two. On 408 days when both cities reported, Ramanathapuram was cleaner on 389 of them; the average daily gap was 132 AQI points.
Seasonality & days
Asansol peaks in December, while Ramanathapuram peaks in January. Asansol logged 0% Severe days and 43.3% Good-or-Satisfactory days; Ramanathapuram was 0% Severe and 94.4% Good-or-Satisfactory. Longest clean-air streaks: Asansol 44 days, Ramanathapuram 46 days.
Year-over-year progress
Asansol has worsened by 12 AQI points (9%) from 2018 to 2024; Ramanathapuram has improved by 18 AQI points (30%) over the same window. The worst recorded day for Asansol reached AQI 394 at Court Area (WBPCB) on 2022-12-13; Ramanathapuram hit AQI 246 at Chalai Bazaar (TNPCB) on 2022-12-07.
Station-level disparity
Asansol spans 4 CPCB stations with a 40-point spread (min 123, max 163); 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 Asansol's 215. That's a significant difference of 205 points.