X  Close Official AQ sensor station - Thabor, Rennes, France

  PM2.5 PM10 O3 AQI classification       
Current 0.4 0.3 0.1 0.4 Good Air Quality
     
Forecastmin avg maxmin avg maxmin avg max           
21-01-20260.10.20.30.10.20.30000.3Good Air Quality
     
22-01-20260.20.30.50.20.40.60000.6Good Air Quality
     
23-01-20260.20.30.40.30.40.5000.10.5Good Air Quality
     
24-01-20260.10.20.40.20.30.40000.4Good Air Quality
     
25-01-20260.30.81.90.30.61.20001.9FairAQ 
    
26-01-20261.81.91.91.11.11.10001.9FairAQ 
    
            

classification AQI The health effects should be based on 24 hours average values only.
Good Air Quality 0-1 Air quality is considered satisfactory, and air pollution poses little or no risk
FairAQ 1-2 Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
Moderate Air Quality 2-3 Members of sensitive groups may experience health effects. The general public is not likely to be affected.
PoorAQ 3-4 Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
VeryPoorAQ 4-5 Health alert: everyone may experience more serious health effects
ExtremelyPoorAQ > 5 Health warnings of emergency conditions. The entire population is more likely to be affected
 More information:  EPA Air Quality Index      Sensor data captured at: 21-01-2026 22:00