Chapra vs Kolār
Side-by-side air quality comparison between Chapra 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 | Chapra | Kolār |
|---|---|---|
| PM2.5(µg/m³) | 99.00 | 5.90 |
| PM10(µg/m³) | 115.50 | 7.20 |
| NO₂(µg/m³) | 53.70 | 10.90 |
| SO₂(µg/m³) | 13.70 | 4.70 |
| O₃(µg/m³) | 10.00 | 35.00 |
| CO(µg/m³) | 858.00 | 189.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chapra averaged an AQI of 149 while Kolār averaged 65 — a 84-point (129%) gap, with Chapra the more polluted and Kolār the cleaner of the two. On 484 days when both cities reported, Kolār was cleaner on 433 of them; the average daily gap was 131 AQI points.
Seasonality & days
Chapra peaks in January, while Kolār peaks in September. Chapra logged 2.4% Severe days and 26.8% Good-or-Satisfactory days; Kolār was 0.9% Severe and 85.30000000000001% Good-or-Satisfactory. Longest clean-air streaks: Chapra 14 days, Kolār 17 days.
Year-over-year progress
Chapra has improved by 181 AQI points (54.8%) from 2021 to 2024; Kolār has improved by 56 AQI points (46.3%) over the same window. The worst recorded day for Chapra reached AQI 452 at Darshan Nagar (BSPCB) on 2022-12-20; Kolār hit AQI 500 at Tamaka Ind Area (KSPCB) on 2018-09-18.
Station-level disparity
Chapra spans 1 CPCB stations with a 0-point spread (min 195, max 195); 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 Chapra's 231. That's a significant difference of 221 points.