Coimbatore vs Nalbāri
Side-by-side air quality comparison between Coimbatore and Nalbāri.
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 | Nalbāri |
|---|---|---|
| PM2.5(µg/m³) | 2.70 | 54.50 |
| PM10(µg/m³) | 2.90 | 61.20 |
| NO₂(µg/m³) | 4.50 | 6.50 |
| SO₂(µg/m³) | 2.20 | 5.80 |
| O₃(µg/m³) | 43.00 | 123.00 |
| CO(µg/m³) | 159.00 | 407.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Nalbāri averaged 129 — a 63-point (95%) gap, with Nalbāri the more polluted and Coimbatore the cleaner of the two. On 271 days when both cities reported, Coimbatore was cleaner on 216 of them; the average daily gap was 81 AQI points.
Seasonality & days
Coimbatore peaks in November, while Nalbāri peaks in January. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Nalbāri was 0% Severe and 41% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Nalbāri 18 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Nalbāri has improved by 72 AQI points (35.8%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Nalbāri hit AQI 384 at Bata Chowk (PCBA) on 2024-01-08.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Nalbāri spans 1 stations with a 0-point spread (min 141, max 141).
Verdict
🏆 Coimbatore has better air quality with an AQI of 5 compared to Nalbāri's 91. That's a significant difference of 86 points.