Bilaspur vs Howrah
Side-by-side air quality comparison between Bilaspur 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 | Bilaspur | Howrah |
|---|---|---|
| PM2.5(µg/m³) | 38.80 | 64.70 |
| PM10(µg/m³) | 47.40 | 69.40 |
| NO₂(µg/m³) | 22.60 | 18.10 |
| SO₂(µg/m³) | 15.90 | 13.10 |
| O₃(µg/m³) | 56.00 | 86.00 |
| CO(µg/m³) | 481.00 | 421.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Bilaspur averaged an AQI of 61 while Howrah averaged 126 — a 65-point (107%) gap, with Howrah the more polluted and Bilaspur the cleaner of the two. On 763 days when both cities reported, Bilaspur was cleaner on 652 of them; the average daily gap was 107 AQI points.
Seasonality & days
Both cities see their worst air in December on average. Bilaspur logged 0% Severe days and 88% Good-or-Satisfactory days; Howrah was 0.7% Severe and 48.7% Good-or-Satisfactory. Longest clean-air streaks: Bilaspur 66 days, Howrah 120 days.
Year-over-year progress
Bilaspur has improved by 22 AQI points (26.5%) from 2021 to 2024; Howrah has improved by 32 AQI points (20.3%) over the same window. The worst recorded day for Bilaspur reached AQI 259 at Mangala (NTPC) on 2023-03-09; Howrah hit AQI 500 at Ghusuri (WBPCB) on 2017-04-15.
Station-level disparity
Bilaspur spans 1 CPCB stations with a 0-point spread (min 69, max 69); Howrah spans 5 stations with a 116-point spread (min 111, max 227).
Verdict
🏆 Bilaspur has better air quality with an AQI of 65 compared to Howrah's 117. That's a significant difference of 52 points.