Coimbatore vs Tirupati
Side-by-side air quality comparison between Coimbatore and Tirupati.
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 | Tirupati |
|---|---|---|
| PM2.5(µg/m³) | 2.50 | 9.00 |
| PM10(µg/m³) | 3.00 | 10.10 |
| NO₂(µg/m³) | 4.60 | 10.20 |
| SO₂(µg/m³) | 2.00 | 2.50 |
| O₃(µg/m³) | 40.00 | 53.00 |
| CO(µg/m³) | 163.00 | 153.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Coimbatore averaged an AQI of 66 while Tirupati averaged 75 — a 9-point (14%) gap, with Tirupati the more polluted and Coimbatore the cleaner of the two. Across 190 shared days the head-to-head is almost even, with an average daily gap of 47 AQI points.
Seasonality & days
Coimbatore peaks in November, while Tirupati peaks in April. Coimbatore logged 0% Severe days and 90.5% Good-or-Satisfactory days; Tirupati was 0% Severe and 84% Good-or-Satisfactory. Longest clean-air streaks: Coimbatore 32 days, Tirupati 36 days.
Year-over-year progress
Coimbatore has improved by 5 AQI points (7%) from 2019 to 2024; Tirupati has improved by 20 AQI points (21.1%) over the same window. The worst recorded day for Coimbatore reached AQI 279 at SIDCO Kurichi (TNPCB) on 2024-09-28; Tirupati hit AQI 263 at Vaikuntapuram (APPCB) on 2022-11-16.
Station-level disparity
Coimbatore spans 2 CPCB stations with a 1-point spread (min 63, max 64); Tirupati spans 1 stations with a 0-point spread (min 75, max 75).
Verdict
🏆 Coimbatore has better air quality with an AQI of 4 compared to Tirupati's 15.