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

The latest data Last 7 days Herstal pollution September 2017 - May 2020
Current data from stations: BETR221
Locations: « Arrondissement of Liège Herstal
Pollution and air quality forecast for Herstal. Today is Saturday, May 3, 2025. The following air pollution values have been recorded for Herstal:
  1. ozone (O3) - 8 (Good)
  2. nitrogen dioxide (NO2) - 52 (Moderate)
  3. particulate matter (PM10) suspended dust - 25 (Moderate)
  4. particulate matter (PM2.5) dust - 16 (Moderate)
Real-time Air Quality Index (AQI) for Herstal, Wednesday, January 17, 2024: 2.

air quality index: 1
AQI 2 Moderate

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

Today (Wednesday, January 17, 2024) air quality is moderate in Herstal. Some pollutants in Herstal may slightly affect very few hypersensitive individuals. Air pollutants in Herstal may cause minor breathing discomfort to sensitive people.


How is the O3 level today in Herstal? (ozone (O3))
8 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
52 (Moderate)

What is the level of PM10 today in Herstal? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Herstal is: 25 (Moderate) The highest PM10 values usually occur in month: 26 (February 2019). The lowest value of particulate matter PM10 pollution in Herstal is usually recorded in: October (1.4).

What is the current level of PM2.5 in Herstal? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 16 (Moderate) For comparison, the highest level of PM2.5 in Herstal in the last 7 days was: 39 (Thursday, January 11, 2024) and the lowest: 8 (Monday, January 15, 2024). The highest PM2.5 values were recorded: 16 (February 2018). The lowest level of particulate matter PM2.5 pollution occurs in month: July (0.62).



Current data Wednesday, January 17, 2024, 10:00 AM

O3 8 (Good)

NO2 52 (Moderate)

PM10 25 (Moderate)

PM2,5 16 (Moderate)

Data on air pollution from recent days in Herstal

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 26
Moderate		 39
Unhealthy for Sensitive Groups		 29
Moderate		 20
Moderate		 9
Good		 8
Good		 8
Good		 12
Good
o3 6
Good		 3
Good		 6
Good		 23
Good		 33
Good		 36
Good		 33
Good		 23
Good
no2 43
Moderate		 46
Moderate		 40
Moderate		 28
Good		 10
Good		 24
Good		 29
Good		 35
Good
pm10 44
Moderate		 54
Unhealthy for Sensitive Groups		 36
Moderate		 24
Moderate		 11
Good		 11
Good		 13
Good		 18
Good
data source »
Air pollution in Herstal from September 2017 to May 2020
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 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
o3 51 (Good) 48 (Good) 49 (Good) 58 (Good) 37 (Good) 24 (Good) 10 (Good) 21 (Good) 27 (Good) 26 (Good) 53 (Good) 45 (Good) 44 (Good) 48 (Good) 13 (Good) 36 (Good) 37 (Good) 28 (Good) 21 (Good) 33 (Good) 43 (Good) 54 (Good) 44 (Good) 42 (Good) 49 (Good) 48 (Good) 34 (Good) 40 (Good) 36 (Good) 25 (Good) 33 (Good) 22 (Good)
no2 17 (Good) 20 (Good) 14 (Good) 10 (Good) 16 (Good) 8.5 (Good) 10 (Good) 3.5 (Good) 14 (Good) 6.4 (Good) 15 (Good) 17 (Good) 23 (Good) 22 (Good) 35 (Good) 20 (Good) 14 (Good) 22 (Good) 22 (Good) 20 (Good) 17 (Good) 23 (Good) 19 (Good) 22 (Good) 24 (Good) 28 (Good) 29 (Good) 22 (Good) 19 (Good) 25 (Good) 17 (Good) 21 (Good)
pm25 9.8 (Good) 13 (Good) 12 (Good) 4.9 (Good) 15 (Moderate) 5.9 (Good) 5 (Good) - (Good) - (Good) 0.62 (Good) 4.4 (Good) 9.7 (Good) 15 (Moderate) 15 (Moderate) 15 (Moderate) 12 (Good) 5.7 (Good) 15 (Moderate) 11 (Good) 5.6 (Good) 3.5 (Good) 3.5 (Good) 7.8 (Good) 9.2 (Good) 11 (Good) 12 (Good) 16 (Moderate) 9.5 (Good) 7.7 (Good) 10 (Good) 7.4 (Good) 15 (Moderate)
pm10 17 (Good) 24 (Moderate) 14 (Good) 6.1 (Good) 16 (Good) 6.3 (Good) 6.6 (Good) 1.4 (Good) - (Good) 4.6 (Good) 11 (Good) 15 (Good) 20 (Moderate) 19 (Good) 26 (Moderate) 15 (Good) 7.7 (Good) 15 (Good) 17 (Good) 11 (Good) 10 (Good) 16 (Good) 16 (Good) 19 (Good) 17 (Good) 19 (Good) 25 (Moderate) 12 (Good) 9.9 (Good) 14 (Good) 12 (Good) 20 (Moderate)
data source »

BETR221

Wednesday, January 17, 2024, 10:00 AM

O3 7.5 (Good)

ozone (O3)

NO2 52 (Moderate)

nitrogen dioxide (NO2)

PM10 25 (Moderate)

particulate matter (PM10) suspended dust

PM2,5 16 (Moderate)

particulate matter (PM2.5) dust

BETR221

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 12 8.2 7.7 8.8 20 29 39 26
o3 23 33 36 33 23 6.4 3.5 6.1
no2 35 29 24 10 28 40 46 43
pm10 18 13 11 11 24 36 54 44

BETR221

2017-09   2020-05
pollution pm25 hikersbay.com
index 2020-05 2020-04 2020-03 2020-02 2020-01 2019-12 2019-11 2019-10 2019-09 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
pm25 9.8 13 12 4.9 15 5.9 5 - - 0.62 4.4 9.7 15 15 15 12 5.7 15 11 5.6 3.5 3.5 7.8 9.2 11 12 16 9.5 7.7 10 7.4 15
pm10 17 24 14 6.1 16 6.3 6.6 1.4 - 4.6 11 15 20 19 26 15 7.7 15 17 11 10 16 16 19 17 19 25 12 9.9 14 12 20
no2 17 20 14 10 16 8.5 10 3.5 14 6.4 15 17 23 22 35 20 14 22 22 20 17 23 19 22 24 28 29 22 19 25 17 21
o3 51 48 49 58 37 24 10 21 27 26 53 45 44 48 13 36 37 28 21 33 43 54 44 42 49 48 34 40 36 25 33 22

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