Nalbāri vs Salem
Side-by-side air quality comparison between Nalbāri 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 | Nalbāri | Salem |
|---|---|---|
| PM2.5(µg/m³) | 45.10 | 7.10 |
| PM10(µg/m³) | 52.50 | 8.30 |
| NO₂(µg/m³) | 1.20 | 1.90 |
| SO₂(µg/m³) | 7.80 | 6.20 |
| O₃(µg/m³) | 170.00 | 116.00 |
| CO(µg/m³) | 378.00 | 164.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Nalbāri averaged an AQI of 129 while Salem averaged 68 — a 61-point (90%) gap, with Nalbāri the more polluted and Salem the cleaner of the two. On 324 days when both cities reported, Salem was cleaner on 271 of them; the average daily gap was 90 AQI points.
Seasonality & days
Nalbāri peaks in January, while Salem peaks in April. Nalbāri logged 0% Severe days and 41% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Nalbāri 18 days, Salem 17 days.
Year-over-year progress
Nalbāri has improved by 72 AQI points (35.8%) from 2022 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Nalbāri reached AQI 384 at Bata Chowk (PCBA) on 2024-01-08; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Nalbāri spans 1 CPCB stations with a 0-point spread (min 141, max 141); Salem spans 1 stations with a 0-point spread (min 73, max 73).
Verdict
🏆 Salem has better air quality with an AQI of 12 compared to Nalbāri's 76. That's a significant difference of 64 points.