Firozabad vs Shillong
Side-by-side air quality comparison between Firozabad and Shillong.
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 | Firozabad | Shillong |
|---|---|---|
| PM2.5(µg/m³) | 59.60 | 17.90 |
| PM10(µg/m³) | 146.70 | 21.40 |
| NO₂(µg/m³) | 22.30 | 3.10 |
| SO₂(µg/m³) | 8.40 | 6.20 |
| O₃(µg/m³) | 71.00 | 118.00 |
| CO(µg/m³) | 494.00 | 304.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Firozabad averaged an AQI of 73 while Shillong averaged 75 — a 2-point (3%) gap, with Shillong the more polluted and Firozabad the cleaner of the two. On 601 days when both cities reported, Shillong was cleaner on 501 of them; the average daily gap was 82 AQI points.
Seasonality & days
Firozabad peaks in January, while Shillong peaks in February. Firozabad logged 0.6% Severe days and 56.6% Good-or-Satisfactory days; Shillong was 0% Severe and 92% Good-or-Satisfactory. Longest clean-air streaks: Firozabad 68 days, Shillong 113 days.
Year-over-year progress
Firozabad has improved by 70 AQI points (49%) from 2021 to 2024; Shillong has worsened by 41 AQI points (120.6%) over the same window. The worst recorded day for Firozabad reached AQI 489 at Nagla Bhau (UPPCB) on 2021-11-09; Shillong hit AQI 212 at Lumpyngngad Shillong (PCB) on 2024-02-19.
Station-level disparity
Firozabad spans 2 CPCB stations with a 19-point spread (min 88, max 107); Shillong spans 2 stations with a 2-point spread (min 42, max 44).
Verdict
🏆 Shillong has better air quality with an AQI of 30 compared to Firozabad's 132. That's a significant difference of 102 points.