Ariyalur vs Bulandshahr
Side-by-side air quality comparison between Ariyalur and Bulandshahr.
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 | Ariyalur | Bulandshahr |
|---|---|---|
| PM2.5(µg/m³) | 7.50 | 71.00 |
| PM10(µg/m³) | 9.90 | 110.10 |
| NO₂(µg/m³) | 8.40 | 35.60 |
| SO₂(µg/m³) | 5.00 | 9.70 |
| O₃(µg/m³) | 42.00 | 39.00 |
| CO(µg/m³) | 137.00 | 517.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Ariyalur averaged an AQI of 46 while Bulandshahr averaged 142 — a 96-point (209%) gap, with Bulandshahr the more polluted and Ariyalur the cleaner of the two. On 602 days when both cities reported, Ariyalur was cleaner on 557 of them; the average daily gap was 95 AQI points.
Seasonality & days
Ariyalur peaks in March, while Bulandshahr peaks in November. Ariyalur logged 0% Severe days and 93.8% Good-or-Satisfactory days; Bulandshahr was 3.2% Severe and 27.099999999999998% Good-or-Satisfactory. Longest clean-air streaks: Ariyalur 57 days, Bulandshahr 41 days.
Year-over-year progress
Ariyalur has improved by 35 AQI points (43.2%) from 2022 to 2024; Bulandshahr has improved by 82 AQI points (36.6%) over the same window. The worst recorded day for Ariyalur reached AQI 221 at Keelapalur (TNPCB) on 2024-04-07; Bulandshahr hit AQI 500 at Yamunapuram (UPPCB) on 2018-06-13.
Station-level disparity
Ariyalur spans 1 CPCB stations with a 0-point spread (min 51, max 51); Bulandshahr spans 1 stations with a 0-point spread (min 180, max 180).
Verdict
🏆 Ariyalur has better air quality with an AQI of 13 compared to Bulandshahr's 137. That's a significant difference of 124 points.