Guwahati vs Kolār
Side-by-side air quality comparison between Guwahati and Kolār.
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 | Guwahati | Kolār |
|---|---|---|
| PM2.5(µg/m³) | 33.80 | 5.90 |
| PM10(µg/m³) | 37.10 | 7.20 |
| NO₂(µg/m³) | 6.60 | 10.90 |
| SO₂(µg/m³) | 4.00 | 4.70 |
| O₃(µg/m³) | 81.00 | 35.00 |
| CO(µg/m³) | 397.00 | 189.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Guwahati averaged an AQI of 123 while Kolār averaged 65 — a 58-point (89%) gap, with Guwahati the more polluted and Kolār the cleaner of the two. On 1075 days when both cities reported, Kolār was cleaner on 915 of them; the average daily gap was 93 AQI points.
Seasonality & days
Guwahati peaks in January, while Kolār peaks in September. Guwahati logged 0.1% Severe days and 44.9% Good-or-Satisfactory days; Kolār was 0.9% Severe and 85.30000000000001% Good-or-Satisfactory. Longest clean-air streaks: Guwahati 105 days, Kolār 17 days.
Year-over-year progress
Guwahati has worsened by 14 AQI points (12.8%) from 2019 to 2024; Kolār has improved by 56 AQI points (46.3%) over the same window. The worst recorded day for Guwahati reached AQI 420 at Railway Colony (PCBA) on 2023-01-15; Kolār hit AQI 500 at Tamaka Ind Area (KSPCB) on 2018-09-18.
Station-level disparity
Guwahati spans 4 CPCB stations with a 26-point spread (min 118, max 144); Kolār spans 1 stations with a 0-point spread (min 71, max 71).
Verdict
🏆 Kolār has better air quality with an AQI of 10 compared to Guwahati's 57.