Ajmer vs Salem
Side-by-side air quality comparison between Ajmer 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 | Ajmer | Salem |
|---|---|---|
| PM2.5(µg/m³) | 22.90 | 13.70 |
| PM10(µg/m³) | 59.60 | 16.40 |
| NO₂(µg/m³) | 3.00 | 15.30 |
| SO₂(µg/m³) | 4.30 | 9.30 |
| O₃(µg/m³) | 64.00 | 37.00 |
| CO(µg/m³) | 168.00 | 240.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2022, Ajmer averaged an AQI of 112 while Salem averaged 68 — a 44-point (65%) gap, with Ajmer the more polluted and Salem the cleaner of the two. On 52 days when both cities reported, Salem was cleaner on 44 of them; the average daily gap was 51 AQI points.
Seasonality & days
Ajmer peaks in November, while Salem peaks in April. Ajmer logged 0% Severe days and 54.300000000000004% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Ajmer 94 days, Salem 17 days.
Year-over-year progress
Ajmer has improved by 22 AQI points (16.4%) from 2017 to 2022; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Ajmer reached AQI 357 at Civil Lines (RSPCB) on 2021-03-31; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Ajmer spans 1 CPCB stations with a 0-point spread (min 102, max 102); 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 Ajmer's 60.