Howrah vs Nagpur
Side-by-side air quality comparison between Howrah and Nagpur.
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 | Howrah | Nagpur |
|---|---|---|
| PM2.5(µg/m³) | 64.70 | 20.30 |
| PM10(µg/m³) | 69.40 | 25.30 |
| NO₂(µg/m³) | 18.10 | 23.20 |
| SO₂(µg/m³) | 13.10 | 12.30 |
| O₃(µg/m³) | 86.00 | 42.00 |
| CO(µg/m³) | 421.00 | 174.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Howrah averaged an AQI of 126 while Nagpur averaged 104 — a 22-point (21%) gap, with Howrah the more polluted and Nagpur the cleaner of the two. On 1740 days when both cities reported, Nagpur was cleaner on 1137 of them; the average daily gap was 76 AQI points.
Seasonality & days
Howrah peaks in December, while Nagpur peaks in November. Howrah logged 0.7% Severe days and 48.7% Good-or-Satisfactory days; Nagpur was 0% Severe and 60.599999999999994% Good-or-Satisfactory. Longest clean-air streaks: Howrah 120 days, Nagpur 68 days.
Year-over-year progress
Howrah has improved by 32 AQI points (20.3%) from 2016 to 2024; Nagpur has improved by 37 AQI points (26.2%) over the same window. The worst recorded day for Howrah reached AQI 500 at Ghusuri (WBPCB) on 2017-04-15; Nagpur hit AQI 342 at Opp GPO Civil Lines (MPCB) on 2022-12-03.
Station-level disparity
Howrah spans 5 CPCB stations with a 116-point spread (min 111, max 227); Nagpur spans 4 stations with a 9-point spread (min 98, max 107).
Verdict
🏆 Nagpur has better air quality with an AQI of 34 compared to Howrah's 117. That's a significant difference of 83 points.