Update README.md

README.md

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 license: apache-2.0
+language:
+- en
+tags:
+- climate
+size_categories:
+- 1M<n<10M
 ---
 ---
 
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 - **Name:** Processed Delhi Air Quality and Weather Data
 - **Version:** 1.0.0
 - **Description:**  
-  This dataset contains hourly weather and air quality data from multiple locations across Delhi, India, collected from March 2000 to November 2024. The data includes environmental parameters such as temperature, humidity, atmospheric pressure, wind speed, wind direction, and concentrations of pollutants (PM2.5, PM10, NO2, SO2, O3, CO), along with the corresponding Air Quality Index (AQI).  
+  This dataset contains **2.9M** rows of hourly weather and air quality data from multiple locations across Delhi, India, collected from March 2000 to November 2024. The data includes environmental parameters such as temperature, humidity, atmospheric pressure, wind speed, wind direction, and concentrations of pollutants (PM2.5, PM10, NO2, SO2, O3, CO), along with the corresponding Air Quality Index (AQI).  
   The data has been pre-processed for model training, including the following updates:
   - Rows with AQI values marked as `"-"` have been removed, as they accounted for 15% of the total dataset.
   - Missing values have been handled through various methods, including dropping, mean imputation, and nearest neighbor interpolation.