Air Pollution in Blois: Real-time Air Quality Index and smog alert.

The latest data Last 7 days
Current data from stations: Blois nord
Locations: « Arrondissement de Blois Blois
Pollution and air quality forecast for Blois. Today is Sunday, May 18, 2025. The following air pollution values have been recorded for Blois:
  1. particulate matter (PM2.5) dust - 6 (Good)
  2. ozone (O3) - 43 (Good)
  3. nitrogen dioxide (NO2) - 5 (Good)
  4. particulate matter (PM10) suspended dust - 12 (Good)
Real-time Air Quality Index (AQI) for Blois, Wednesday, January 17, 2024: 1.

air quality index: 0
AQI 1 Good

What is the air quality in Blois today? Is the air polluted in Blois?. Is there smog?

Today (Wednesday, January 17, 2024) air quality is good. The air quality has no effect on health. Everyone can continue their outdoor activities normally in Blois.


What is the current level of PM2.5 in Blois? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 6 (Good) For comparison, the highest level of PM2.5 in Blois in the last 7 days was: 35 (Sunday, January 14, 2024) and the lowest: 9 (Wednesday, January 17, 2024).

How is the O3 level today in Blois? (ozone (O3))
43 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
5 (Good)

What is the level of PM10 today in Blois? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Blois is: 12 (Good) The highest PM10 values usually occur in month: 23 (February 2019). The lowest value of particulate matter PM10 pollution in Blois is usually recorded in: November (9.9).



Current data Wednesday, January 17, 2024, 9:00 AM

PM2,5 6 (Good)

O3 43 (Good)

NO2 5 (Good)

PM10 12 (Good)

1 (Good)

Data on air pollution from recent days in Blois

index 2024-01-10 2024-01-11 2024-01-12 2024-01-13 2024-01-14 2024-01-15 2024-01-16 2024-01-17
pm25 30
Moderate		 32
Moderate		 20
Moderate		 20
Moderate		 35
Unhealthy for Sensitive Groups		 28
Moderate		 27
Moderate		 9
Good
no 3
Good		 4
Good		 1
Good		 1
Good		 1
Good		 7
Good		 6
Good		 1
Good
no2 17
Good		 26
Good		 21
Good		 9
Good		 10
Good		 23
Good		 25
Good		 8
Good
pm10 32
Moderate		 36
Moderate		 23
Moderate		 20
Moderate		 37
Moderate		 30
Moderate		 29
Moderate		 10
Good
o3 18
Good		 17
Good		 41
Good		 40
Good		 25
Good		 25
Good		 26
Good		 26
Good
data source »

Air pollution in Blois from September 2017 to May 2020

index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09
pm10 12 (Good) 18 (Good) 16 (Good) 12 (Good) 15 (Good) 14 (Good) 9.9 (Good) 10 (Good) 12 (Good) 11 (Good) 17 (Good) 13 (Good) 12 (Good) 15 (Good) 17 (Good) 23 (Moderate) 16 (Good) 13 (Good) 15 (Good) 17 (Good) 12 (Good) 12 (Good) 16 (Good) 13 (Good) 16 (Good) 12 (Good) 13 (Good) 18 (Good) 10 (Good) 13 (Good) 13 (Good) 10 (Good) 12 (Good)
o3 62 (Good) 76 (Moderate) 60 (Good) 63 (Good) 43 (Good) 50 (Good) 47 (Good) 46 (Good) 61 (Good) 70 (Good) 83 (Moderate) 73 (Moderate) 70 (Good) 75 (Moderate) 71 (Moderate) 46 (Good) 47 (Good) 49 (Good) 33 (Good) 46 (Good) 62 (Good) 63 (Good) 77 (Moderate) 64 (Good) 75 (Moderate) 70 (Good) 67 (Good) 48 (Good) 52 (Good) 44 (Good) 38 (Good) 43 (Good) 45 (Good)
no2 5.9 (Good) 6.9 (Good) 7 (Good) 5 (Good) 10 (Good) 8.6 (Good) 7.7 (Good) 6.4 (Good) 6.4 (Good) 5.9 (Good) 6.8 (Good) 5.7 (Good) 7.6 (Good) 10 (Good) 8.9 (Good) 21 (Good) 13 (Good) 7.4 (Good) 13 (Good) 12 (Good) 10 (Good) 6.9 (Good) 6.6 (Good) 6.8 (Good) 7.6 (Good) 9 (Good) 8.8 (Good) 13 (Good) 8.2 (Good) - (Good) - (Good) - (Good) - (Good)
data source »

Blois nord

Wednesday, January 17, 2024, 9:00 AM

PM2,5 6.4 (Good)

particulate matter (PM2.5) dust

O3 43 (Good)

ozone (O3)

NO2 4.7 (Good)

nitrogen dioxide (NO2)

PM10 12 (Good)

particulate matter (PM10) suspended dust

1.3 (Good)

index_name_no

Blois nord

index 2024-01-17 2024-01-16 2024-01-15 2024-01-14 2024-01-13 2024-01-12 2024-01-11 2024-01-10
pm25 8.9 27 28 35 20 20 32 30
no 1.1 5.7 6.9 1.2 1.1 1.5 3.9 3
no2 8.1 25 23 10 8.7 21 26 17
pm10 10 29 30 37 20 23 36 32
o3 26 26 25 25 40 41 17 18

FR34061

index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 2019-08 2019-07 2019-06 2019-05 2019-04 2019-03 2019-02 2019-01 2018-12 2018-11 2018-10 2018-09 2018-08 2018-07 2018-06 2018-05 2018-04 2018-03 2018-02 2018-01 2017-12 2017-11 2017-10 2017-09
pm10 12 18 16 12 15 14 9.9 10 12 11 17 13 12 15 17 23 16 13 15 17 12 12 16 13 16 12 13 18 10 13 13 10 12
o3 62 76 60 63 43 50 47 46 61 70 83 73 70 75 71 46 47 49 33 46 62 63 77 64 75 70 67 48 52 44 38 43 45
no2 5.9 6.9 7 5 10 8.6 7.7 6.4 6.4 5.9 6.8 5.7 7.6 10 8.9 21 13 7.4 13 12 10 6.9 6.6 6.8 7.6 9 8.8 13 8.2 - - - -

* Pollution data source: https://openaq.org (EEA France) The data is licensed under CC-By 4.0