Air quality indicators
Air quality index values for zones monitored over the month of:
September 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 good to very good in the city of Toulouse and its suburbs. These values show a marked improvement on the previous month, when the second fortnight saw a major pollution wave. The detailed readings presented below show a homogeneous period over the month.
The averaged values presented 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)
Averaged PM10 values show a very satisfactory situation this month. The highest values are found on the city’s ring road, corresponding to official sensor readings (in blue circles), and remain acceptable. The maximum value of 21 at Rangueil (compared with a value of 22 in August) reflects stable traffic on this route over the last two months, and confirms that the deterioration observed in August was not specifically due to road traffic.
Measuring points near the airport (Blagnac) and to the north of Toulouse show a relatively undisturbed environment.
All citizen sensors show moderate pollution, well below WHO recommended values.
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
Citizen sensors can simultaneously assess PM10 and PM2.5 concentrations, which is not the case with all official sensors.
Generally speaking, the values are low, but a little above the minimum standards for this type of particle, but there’s no real cause for concern.
- Average PM2.5 measurements
Temperature evolution over the present month
PM10 concentration over the present month
PM2.5 concentration over the present month