Salem vs Udaipur
Side-by-side air quality comparison between Salem and Udaipur.
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 | Udaipur |
|---|---|---|
| PM2.5(µg/m³) | 13.70 | 23.60 |
| PM10(µg/m³) | 16.40 | 33.90 |
| NO₂(µg/m³) | 15.30 | 7.70 |
| SO₂(µg/m³) | 9.30 | 8.30 |
| O₃(µg/m³) | 37.00 | 51.00 |
| CO(µg/m³) | 240.00 | 184.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Salem averaged an AQI of 68 while Udaipur averaged 112 — a 44-point (65%) gap, with Udaipur the more polluted and Salem the cleaner of the two. On 393 days when both cities reported, Salem was cleaner on 324 of them; the average daily gap was 48 AQI points.
Seasonality & days
Salem peaks in April, while Udaipur peaks in January. Salem logged 0% Severe days and 87.1% Good-or-Satisfactory days; Udaipur was 0% Severe and 47% Good-or-Satisfactory. Longest clean-air streaks: Salem 17 days, Udaipur 49 days.
Year-over-year progress
Salem has improved by 5 AQI points (6.8%) from 2022 to 2024; Udaipur has improved by 77 AQI points (40.7%) over the same window. The worst recorded day for Salem reached AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15; Udaipur hit AQI 348 at Ashok Nagar (RSPCB) on 2021-11-15.
Station-level disparity
Salem spans 1 CPCB stations with a 0-point spread (min 73, max 73); Udaipur spans 1 stations with a 0-point spread (min 112, max 112).
Verdict
🏆 Salem has better air quality with an AQI of 23 compared to Udaipur's 39.