Salem vs Sonipat
Side-by-side air quality comparison between Salem and Sonipat.
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 | Salem | Sonipat |
|---|---|---|
| PM2.5(µg/m³) | 12.70 | 77.50 |
| PM10(µg/m³) | 15.90 | 154.10 |
| NO₂(µg/m³) | 17.00 | 50.80 |
| SO₂(µg/m³) | 7.00 | 35.90 |
| O₃(µg/m³) | 30.00 | 47.00 |
| CO(µg/m³) | 237.00 | 689.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Salem averaged an AQI of 68 while Sonipat averaged 134 — a 66-point (97%) gap, with Sonipat the more polluted and Salem the cleaner of the two. On 300 days when both cities reported, Salem was cleaner on 274 of them; the average daily gap was 103 AQI points.
Seasonality & days
Salem peaks in April, while Sonipat peaks in November. Salem logged 0% Severe days and 87.1% Good-or-Satisfactory days; Sonipat was 0.8% Severe and 26.5% Good-or-Satisfactory. Longest clean-air streaks: Salem 17 days, Sonipat 21 days.
Year-over-year progress
Salem has improved by 5 AQI points (6.8%) from 2022 to 2024; Sonipat has improved by 220 AQI points (62.1%) over the same window. The worst recorded day for Salem reached AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15; Sonipat hit AQI 455 at Murthal (HSPCB) on 2023-11-03.
Station-level disparity
Salem spans 1 CPCB stations with a 0-point spread (min 73, max 73); Sonipat spans 1 stations with a 0-point spread (min 162, max 162).
Verdict
🏆 Salem has better air quality with an AQI of 21 compared to Sonipat's 159. That's a significant difference of 138 points.