Bangalore vs Howrah
Side-by-side air quality comparison between Bangalore and Howrah.
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 | Bangalore | Howrah |
|---|---|---|
| PM2.5(µg/m³) | 5.10 | 64.70 |
| PM10(µg/m³) | 5.60 | 69.40 |
| NO₂(µg/m³) | 9.50 | 18.10 |
| SO₂(µg/m³) | 4.20 | 13.10 |
| O₃(µg/m³) | 35.00 | 86.00 |
| CO(µg/m³) | 290.00 | 421.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bangalore averaged an AQI of 74 while Howrah averaged 126 — a 52-point (70%) gap, with Howrah the more polluted and Bangalore the cleaner of the two. On 2366 days when both cities reported, Bangalore was cleaner on 1187 of them; the average daily gap was 81 AQI points.
Seasonality & days
Bangalore peaks in March, while Howrah peaks in December. Bangalore logged 0.5% Severe days and 42.6% Good-or-Satisfactory days; Howrah was 0.7% Severe and 48.7% Good-or-Satisfactory. Longest clean-air streaks: Bangalore 31 days, Howrah 120 days.
Year-over-year progress
Bangalore has improved by 26 AQI points (26%) from 2016 to 2024; Howrah has improved by 32 AQI points (20.3%) over the same window. The worst recorded day for Bangalore reached AQI 500 at Silk Board (KSPCB) on 2024-01-10; Howrah hit AQI 500 at Ghusuri (WBPCB) on 2017-04-15.
Station-level disparity
Bangalore spans 14 CPCB stations with a 50-point spread (min 49, max 99); Howrah spans 5 stations with a 116-point spread (min 111, max 227).
Verdict
🏆 Bangalore has better air quality with an AQI of 9 compared to Howrah's 117. That's a significant difference of 108 points.