Purnia vs Rajgir
Side-by-side air quality comparison between Purnia and Rajgir.
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 | Purnia | Rajgir |
|---|---|---|
| PM2.5(µg/m³) | 89.90 | 66.60 |
| PM10(µg/m³) | 95.20 | 87.50 |
| NO₂(µg/m³) | 6.00 | 6.90 |
| SO₂(µg/m³) | 25.70 | 16.60 |
| O₃(µg/m³) | 177.00 | 167.00 |
| CO(µg/m³) | 513.00 | 310.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Purnia averaged an AQI of 133 while Rajgir averaged 124 — a 9-point (7%) gap, with Purnia the more polluted and Rajgir the cleaner of the two. On 701 days when both cities reported, Rajgir was cleaner on 448 of them; the average daily gap was 58 AQI points.
Seasonality & days
Both cities see their worst air in January on average. Purnia logged 3.7% Severe days and 33.699999999999996% Good-or-Satisfactory days; Rajgir was 0.6% Severe and 37.9% Good-or-Satisfactory. Longest clean-air streaks: Purnia 14 days, Rajgir 26 days.
Year-over-year progress
Purnia has improved by 163 AQI points (55.1%) from 2021 to 2024; Rajgir has improved by 158 AQI points (56%) over the same window. The worst recorded day for Purnia reached AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15; Rajgir hit AQI 461 at Dangi Tola (BSPCB) on 2022-12-31.
Station-level disparity
Purnia spans 1 CPCB stations with a 0-point spread (min 176, max 176); Rajgir spans 1 stations with a 0-point spread (min 154, max 154).
Verdict
🏆 Rajgir has better air quality with an AQI of 123 compared to Purnia's 200. That's a significant difference of 77 points.