Chennai vs Sikar
Side-by-side air quality comparison between Chennai 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
CPCB Multi-Year History (2016–2024)
Summary
Overview
In 2024, Chennai averaged an AQI of 68 while Sikar averaged 139 — a 71-point (104%) gap, with Sikar the more polluted and Chennai the cleaner of the two. On 351 days when both cities reported, Chennai was cleaner on 250 of them; the average daily gap was 61 AQI points.
Seasonality & days
Chennai peaks in December, while Sikar peaks in January. Chennai logged 0% Severe days and 57.5% Good-or-Satisfactory days; Sikar was 0.2% Severe and 34% Good-or-Satisfactory. Longest clean-air streaks: Chennai 53 days, Sikar 32 days.
Year-over-year progress
Chennai has improved by 25 AQI points (26.9%) from 2017 to 2024; Sikar has worsened by 4 AQI points (3%) over the same window. The worst recorded day for Chennai reached AQI 391 at Kodungaiyur (TNPCB) on 2021-05-14; Sikar hit AQI 452 at Radhakishan Pura (RSPCB) on 2023-11-16.
Station-level disparity
Chennai spans 9 CPCB stations with a 27-point spread (min 63, max 90); Sikar spans 1 stations with a 0-point spread (min 137, max 137).