Hyderabad vs Purnia
Side-by-side air quality comparison between Hyderabad and Purnia.
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 | Hyderabad | Purnia |
|---|---|---|
| PM2.5(µg/m³) | 20.50 | 105.90 |
| PM10(µg/m³) | 27.90 | 109.00 |
| NO₂(µg/m³) | 10.40 | 25.20 |
| SO₂(µg/m³) | 5.30 | 20.10 |
| O₃(µg/m³) | 63.00 | 67.00 |
| CO(µg/m³) | 281.00 | 707.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Hyderabad averaged an AQI of 78 while Purnia averaged 133 — a 55-point (71%) gap, with Purnia the more polluted and Hyderabad the cleaner of the two. On 603 days when both cities reported, Hyderabad was cleaner on 346 of them; the average daily gap was 71 AQI points.
Seasonality & days
Hyderabad peaks in December, while Purnia peaks in January. Hyderabad logged 0.2% Severe days and 41.6% Good-or-Satisfactory days; Purnia was 3.7% Severe and 33.699999999999996% Good-or-Satisfactory. Longest clean-air streaks: Hyderabad 71 days, Purnia 14 days.
Year-over-year progress
Hyderabad has improved by 24 AQI points (23.5%) from 2016 to 2024; Purnia has improved by 163 AQI points (55.1%) over the same window. The worst recorded day for Hyderabad reached AQI 500 at Sanathnagar (TSPCB) on 2024-04-28; Purnia hit AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15.
Station-level disparity
Hyderabad spans 14 CPCB stations with a 35-point spread (min 62, max 97); Purnia spans 1 stations with a 0-point spread (min 176, max 176).
Verdict
🏆 Hyderabad has better air quality with an AQI of 34 compared to Purnia's 253. That's a significant difference of 219 points.