Coimbatore vs Motihari
Side-by-side air quality comparison between Coimbatore and Motihari.
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 | Coimbatore | Motihari |
|---|---|---|
| PM2.5(µg/m³) | 2.50 | 156.00 |
| PM10(µg/m³) | 3.00 | 175.10 |
| NO₂(µg/m³) | 4.60 | 76.90 |
| SO₂(µg/m³) | 2.00 | 22.40 |
| O₃(µg/m³) | 40.00 | 0.00 |
| CO(µg/m³) | 163.00 | 1456.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Motihari averaged 116 — a 50-point (76%) gap, with Motihari the more polluted and Coimbatore the cleaner of the two. On 505 days when both cities reported, Coimbatore was cleaner on 445 of them; the average daily gap was 91 AQI points.
Seasonality & days
Both cities see their worst air in November on average. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Motihari was 1.2% Severe and 39.1% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Motihari 26 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Motihari has improved by 106 AQI points (47.7%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Motihari hit AQI 448 at Gandak Colony (BSPCB) on 2022-11-17.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Motihari spans 1 stations with a 0-point spread (min 153, max 153).
Verdict
🏆 Coimbatore has better air quality with an AQI of 4 compared to Motihari's 328. That's a significant difference of 324 points.