Bareilly vs Salem
Side-by-side air quality comparison between Bareilly 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 | Bareilly | Salem |
|---|---|---|
| PM2.5(µg/m³) | 62.60 | 13.70 |
| PM10(µg/m³) | 85.70 | 16.40 |
| NO₂(µg/m³) | 26.50 | 15.30 |
| SO₂(µg/m³) | 8.90 | 9.30 |
| O₃(µg/m³) | 84.00 | 37.00 |
| CO(µg/m³) | 816.00 | 240.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bareilly averaged an AQI of 61 while Salem averaged 68 — a 7-point (11%) gap, with Salem the more polluted and Bareilly the cleaner of the two. On 206 days when both cities reported, Salem was cleaner on 136 of them; the average daily gap was 42 AQI points.
Seasonality & days
Bareilly peaks in November, while Salem peaks in April. Bareilly logged 0% Severe days and 73.1% Good-or-Satisfactory days; Salem was 0% Severe and 87.1% Good-or-Satisfactory. Longest clean-air streaks: Bareilly 51 days, Salem 17 days.
Year-over-year progress
Bareilly has improved by 50 AQI points (45%) from 2022 to 2024; Salem has improved by 5 AQI points (6.8%) over the same window. The worst recorded day for Bareilly reached AQI 292 at Rajendra Nagar (UPPCB) on 2022-11-03; Salem hit AQI 214 at Sona College of Technology (TNPCB) on 2024-01-15.
Station-level disparity
Bareilly spans 2 CPCB stations with a 12-point spread (min 71, max 83); 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 Bareilly's 110. That's a significant difference of 87 points.