Rourkela vs Salem
Side-by-side air quality comparison between Rourkela and Salem.
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 | Rourkela | Salem |
|---|---|---|
| PM2.5(µg/m³) | 111.80 | 13.70 |
| PM10(µg/m³) | 123.90 | 16.40 |
| NO₂(µg/m³) | 35.70 | 15.30 |
| SO₂(µg/m³) | 23.90 | 9.30 |
| O₃(µg/m³) | 66.00 | 37.00 |
| CO(µg/m³) | 408.00 | 240.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Rourkela averaged an AQI of 115 while Salem averaged 68 — a 47-point (69%) gap, with Rourkela the more polluted and Salem the cleaner of the two. On 174 days when both cities reported, Salem was cleaner on 159 of them; the average daily gap was 87 AQI points.
Seasonality & days
Rourkela peaks in November, while Salem peaks in April. Rourkela logged 0% Severe days and 32.9% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Rourkela 60 days, Salem 17 days.
Year-over-year progress
Rourkela has improved by 112 AQI points (49.3%) from 2022 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Rourkela reached AQI 344 at Raghunathpali (OSPCB) on 2024-01-01; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Rourkela spans 3 CPCB stations with a 29-point spread (min 106, max 135); Salem spans 1 stations with a 0-point spread (min 73, max 73).
Verdict
🏆 Salem has better air quality with an AQI of 23 compared to Rourkela's 273. That's a significant difference of 250 points.