The Times of India. Noida/Ghaziabad: Overnight rain brought significant relief from air pollution in Gautam Budh Nagar on Friday, with the air quality index (AQI) in both Noida and Greater Noida dropping to the. NOIDA: Air quality in Gautam Budh Nagar worsened on Wednesday with all three major cities—Noida, Greater Noida, and Ghaziabad— recording “poor” air, according to the Uttar Pradesh Pollution Control.