Mangalore vs Salem
Side-by-side air quality comparison between Mangalore 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 | Mangalore | Salem |
|---|---|---|
| PM2.5(µg/m³) | 9.00 | 13.70 |
| PM10(µg/m³) | 15.50 | 16.40 |
| NO₂(µg/m³) | 5.10 | 15.30 |
| SO₂(µg/m³) | 1.80 | 9.30 |
| O₃(µg/m³) | 48.00 | 37.00 |
| CO(µg/m³) | 169.00 | 240.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Mangalore averaged an AQI of 61 while Salem averaged 68 — a 7-point (11%) gap, with Salem the more polluted and Mangalore the cleaner of the two. On 367 days when both cities reported, Salem was cleaner on 185 of them; the average daily gap was 25 AQI points.
Seasonality & days
Mangalore peaks in February, while Salem peaks in April. Mangalore logged 0% Severe days and 87.2% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Mangalore 64 days, Salem 17 days.
Year-over-year progress
Mangalore has improved by 9 AQI points (12.9%) from 2021 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Mangalore reached AQI 235 at Kadri (KSPCB) on 2023-11-17; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Mangalore spans 1 CPCB stations with a 0-point spread (min 68, max 68); Salem spans 1 stations with a 0-point spread (min 73, max 73).
Verdict
🏆 Mangalore has better air quality with an AQI of 16 compared to Salem's 23.