Chennai vs Rajgir
Side-by-side air quality comparison between Chennai 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 | Chennai | Rajgir |
|---|---|---|
| PM2.5(µg/m³) | 16.60 | 75.90 |
| PM10(µg/m³) | 18.20 | 83.40 |
| NO₂(µg/m³) | 16.20 | 43.30 |
| SO₂(µg/m³) | 9.00 | 12.70 |
| O₃(µg/m³) | 57.00 | 17.00 |
| CO(µg/m³) | 350.00 | 512.00 |
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Rajgir averaged 124 — a 56-point (82%) gap, with Rajgir the more polluted and Chennai the cleaner of the two. On 574 days when both cities reported, Chennai was cleaner on 322 of them; the average daily gap was 82 AQI points.
Seasonality & days
Chennai peaks in December, while Rajgir peaks in January. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Rajgir was 0.6% Severe and 37.9% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Rajgir 26 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Rajgir has improved by 158 AQI points (56%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Rajgir hit AQI 461 at Dangi Tola (BSPCB) on 2022-12-31.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Rajgir spans 1 stations with a 0-point spread (min 154, max 154).
Verdict
🏆 Chennai has better air quality with an AQI of 28 compared to Rajgir's 153. That's a significant difference of 125 points.