Purnia vs Sikar
Side-by-side air quality comparison between Purnia and Sikar.
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 | Sikar |
|---|---|---|
| PM2.5(µg/m³) | 112.00 | 27.60 |
| PM10(µg/m³) | 115.70 | 68.20 |
| NO₂(µg/m³) | 31.10 | 12.80 |
| SO₂(µg/m³) | 18.40 | 5.40 |
| O₃(µg/m³) | 42.00 | 65.00 |
| CO(µg/m³) | 756.00 | 223.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Purnia averaged an AQI of 133 while Sikar averaged 139 — a 6-point (5%) gap, with Sikar the more polluted and Purnia the cleaner of the two. On 484 days when both cities reported, Purnia was cleaner on 249 of them; the average daily gap was 51 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; Sikar was 0.2% Severe and 34% Good-or-Satisfactory. Longest clean-air streaks: Purnia 14 days, Sikar 32 days.
Year-over-year progress
Purnia has improved by 163 AQI points (55.1%) from 2021 to 2024; Sikar has worsened by 4 AQI points (3%) over the same window. The worst recorded day for Purnia reached AQI 460 at Mariam Nagar (BSPCB) on 2022-12-15; Sikar hit AQI 452 at Radhakishan Pura (RSPCB) on 2023-11-16.
Station-level disparity
Purnia spans 1 CPCB stations with a 0-point spread (min 176, max 176); Sikar spans 1 stations with a 0-point spread (min 137, max 137).
Verdict
🏆 Sikar has better air quality with an AQI of 69 compared to Purnia's 274. That's a significant difference of 205 points.