The AQI in Tumkur is at 76, which places it in the Moderate category. PM2.5 and PM10 are at 37 µg/m³ and 76 µg/m³ . Ozone (O3) levels are at 12 ppb , with NO2 levels at 7 ppb , which may cause mild irritation in sensitive individuals. CO at 371 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.