Air quality indicators
Air quality index values for zones monitored over the month of:
June 2024
The index corresponds to the average concentration of particle matter measured in micrograms / m3;
the lower the value, the better the air quality.
The average environment of the Toulouse region
PM 10
Toulouse Inside Peripheral Ring
Good
Toulouse Suburd
Good
Castanet-Tolosan
Good
PM 2.5
Toulouse Inside Peripheral Ring
Good
Toulouse Suburd
Good
Castanet-Tolosan
Good
Environmental quality averaged over the period under review is acceptable to good, with average values below WHO standards. However, the differences between the urban center of Toulouse and the suburbs are accentuated by significant pollution in the center of the greater metropolitan area.
The average values presented here take into account measurements from citizen sensors and official Atmo Occitanie sensors.
Detailed environment of the Toulouse region
- Average PM 10 measurements (readings in micrograms / m3)
The average PM10 values recorded remained acceptable during the month, but showed a significant increase, especially in central Toulouse and less so in the suburbs, compared with previous months. Measurements taken on the Toulouse ring road by official sensors (in blue circles) bear witness to this deterioration. The maximum value of 24 at Rangueil (compared with 17 in May) suggests an aggravating effect of road traffic during this period.
Measurement points near the airport (Blagnac) also show a deterioration. More surprisingly, the extreme point to the north-west (value 12), far from the large conurbation, suggests an effect of south-easterly winds (the Autan wind), which could carry a cloud of particles. A study of the winds during this period could be interesting for a better understanding of the phenomenon.
Readings to the west of Toulouse and to the southeast show acceptable values, well below those in the center of the city.
The northern and eastern parts of Toulouse, where there are no sensors, cannot be properly assessed.
Special focus on Castanet-Tolosan
- Average PM10 measurements
- Average PM 2.5 measurements (readings in micrograms / m3
The same trend can be seen for PM2.5 particles as for PM10 particles.
- Average PM2.5 measurements
Temperature evolution over the present month
PM10 concentration over the present month
PM2.5 concentration over the present month
