Bulandshahr vs Tiruchirappalli
Side-by-side air quality comparison between Bulandshahr and Tiruchirappalli.
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 | Tiruchirappalli |
|---|---|---|
| PM2.5(µg/m³) | 69.20 | 5.60 |
| PM10(µg/m³) | 121.10 | 6.40 |
| NO₂(µg/m³) | 22.90 | 6.80 |
| SO₂(µg/m³) | 11.10 | 3.40 |
| O₃(µg/m³) | 91.00 | 40.00 |
| CO(µg/m³) | 455.00 | 134.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bulandshahr averaged an AQI of 142 while Tiruchirappalli averaged 50 — a 92-point (184%) gap, with Bulandshahr the more polluted and Tiruchirappalli the cleaner of the two. On 88 days when both cities reported, Tiruchirappalli was cleaner on 84 of them; the average daily gap was 140 AQI points.
Seasonality & days
Bulandshahr peaks in November, while Tiruchirappalli peaks in January. Bulandshahr logged 3.2% Severe days and 27.099999999999998% Good-or-Satisfactory days; Tiruchirappalli was 0% Severe and 96.5% Good-or-Satisfactory. Longest clean-air streaks: Bulandshahr 41 days, Tiruchirappalli 46 days.
Year-over-year progress
Bulandshahr has improved by 82 AQI points (36.6%) from 2018 to 2024; Tiruchirappalli has improved by 23 AQI points (31.5%) over the same window. The worst recorded day for Bulandshahr reached AQI 500 at Yamunapuram (UPPCB) on 2018-06-13; Tiruchirappalli hit AQI 114 at St Joseph College (TNPCB) on 2024-01-14.
Station-level disparity
Bulandshahr spans 1 CPCB stations with a 0-point spread (min 180, max 180); Tiruchirappalli spans 1 stations with a 0-point spread (min 52, max 52).
Verdict
🏆 Tiruchirappalli has better air quality with an AQI of 9 compared to Bulandshahr's 131. That's a significant difference of 122 points.