Rohtak vs Salem
Side-by-side air quality comparison between Rohtak 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 | Rohtak | Salem |
|---|---|---|
| PM2.5(µg/m³) | 71.00 | 13.70 |
| PM10(µg/m³) | 162.50 | 16.40 |
| NO₂(µg/m³) | 24.10 | 15.30 |
| SO₂(µg/m³) | 15.90 | 9.30 |
| O₃(µg/m³) | 69.00 | 37.00 |
| CO(µg/m³) | 618.00 | 240.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Rohtak averaged an AQI of 148 while Salem averaged 68 — a 80-point (118%) gap, with Rohtak the more polluted and Salem the cleaner of the two. On 367 days when both cities reported, Salem was cleaner on 298 of them; the average daily gap was 87 AQI points.
Seasonality & days
Rohtak peaks in November, while Salem peaks in April. Rohtak logged 1.1% Severe days and 36.599999999999994% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Rohtak 45 days, Salem 17 days.
Year-over-year progress
Rohtak has improved by 123 AQI points (45.4%) from 2017 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Rohtak reached AQI 498 at MD University (HSPCB) on 2019-11-03; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Rohtak spans 1 CPCB stations with a 0-point spread (min 159, max 159); 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 Rohtak's 142. That's a significant difference of 119 points.