Bhilai vs Coimbatore
Side-by-side air quality comparison between Bhilai 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 | Bhilai | Coimbatore |
|---|---|---|
| PM2.5(µg/m³) | 46.40 | 2.70 |
| PM10(µg/m³) | 52.30 | 2.90 |
| NO₂(µg/m³) | 43.70 | 4.50 |
| SO₂(µg/m³) | 70.60 | 2.20 |
| O₃(µg/m³) | 42.00 | 43.00 |
| CO(µg/m³) | 675.00 | 159.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bhilai averaged an AQI of 73 while Coimbatore averaged 66 — a 7-point (11%) gap, with Bhilai the more polluted and Coimbatore the cleaner of the two. On 371 days when both cities reported, Coimbatore was cleaner on 243 of them; the average daily gap was 33 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Bhilai logged 0% Severe days and 71.6% Good-or-Satisfactory days; Coimbatore was 0% Severe and 90.5% Good-or-Satisfactory. Longest clean-air streaks: Bhilai 119 days, Coimbatore 32 days.
Year-over-year progress
Bhilai has worsened by 8 AQI points (12.3%) from 2021 to 2024; Coimbatore has improved by 5 AQI points (7%) over the same window. The worst recorded day for Bhilai reached AQI 288 at Hathkhoj (CECB) on 2023-12-26; Coimbatore hit AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28.
Station-level disparity
Bhilai spans 3 CPCB stations with a 25-point spread (min 59, max 84); 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 Bhilai's 78. That's a significant difference of 73 points.