Bulandshahr vs Coimbatore
Side-by-side air quality comparison between Bulandshahr and Coimbatore.
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 | Bulandshahr | Coimbatore |
|---|---|---|
| PM2.5(µg/m³) | 69.20 | 2.70 |
| PM10(µg/m³) | 121.10 | 2.90 |
| NO₂(µg/m³) | 22.90 | 4.50 |
| SO₂(µg/m³) | 11.10 | 2.20 |
| O₃(µg/m³) | 91.00 | 43.00 |
| CO(µg/m³) | 455.00 | 159.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bulandshahr averaged an AQI of 142 while Coimbatore averaged 66 — a 76-point (115%) gap, with Bulandshahr the more polluted and Coimbatore the cleaner of the two. On 953 days when both cities reported, Coimbatore was cleaner on 855 of them; the average daily gap was 119 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Bulandshahr logged 3.2% Severe days and 27.099999999999998% Good-or-Satisfactory days; Coimbatore was 0% Severe and 90.5% Good-or-Satisfactory. Longest clean-air streaks: Bulandshahr 41 days, Coimbatore 32 days.
Year-over-year progress
Bulandshahr has improved by 82 AQI points (36.6%) from 2018 to 2024; Coimbatore has improved by 5 AQI points (7%) over the same window. The worst recorded day for Bulandshahr reached AQI 500 at Yamunapuram (UPPCB) on 2018-06-13; Coimbatore hit AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28.
Station-level disparity
Bulandshahr spans 1 CPCB stations with a 0-point spread (min 180, max 180); Coimbatore spans 2 stations with a 1-point spread (min 63, max 64).
Verdict
🏆 Coimbatore has better air quality with an AQI of 5 compared to Bulandshahr's 131. That's a significant difference of 126 points.