Muzaffarpur vs Salem
Side-by-side air quality comparison between Muzaffarpur 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 | Muzaffarpur | Salem |
|---|---|---|
| PM2.5(µg/m³) | 120.60 | 13.70 |
| PM10(µg/m³) | 135.00 | 16.40 |
| NO₂(µg/m³) | 48.60 | 15.30 |
| SO₂(µg/m³) | 19.60 | 9.30 |
| O₃(µg/m³) | 54.00 | 37.00 |
| CO(µg/m³) | 873.00 | 240.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Muzaffarpur averaged an AQI of 151 while Salem averaged 68 — a 83-point (122%) gap, with Muzaffarpur the more polluted and Salem the cleaner of the two. On 388 days when both cities reported, Salem was cleaner on 363 of them; the average daily gap was 143 AQI points.
Seasonality & days
Muzaffarpur peaks in January, while Salem peaks in April. Muzaffarpur logged 4.5% Severe days and 30.900000000000002% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Muzaffarpur 26 days, Salem 17 days.
Year-over-year progress
Muzaffarpur has improved by 62 AQI points (29.1%) from 2016 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Muzaffarpur reached AQI 482 at Collectorate (BSPCB) on 2016-01-01; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Muzaffarpur spans 3 CPCB stations with a 14-point spread (min 171, max 185); 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 Muzaffarpur's 301. That's a significant difference of 278 points.