The AQI in Diu is at 79, which places it in the Moderate category. PM2.5 and PM10 are at 35 µg/m³ and 79 µg/m³ . Ozone (O3) levels are at 14 ppb , with NO2 levels at 19 ppb , which may cause mild irritation in sensitive individuals. CO at 789 ppb is within the acceptable limit, so most individuals can still go about their day. However, if you suffer from respiratory conditions, you may want to limit outdoor exposure.