Stay updated with real-time air quality in Holywood, Ards and North Down featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
31
Good
Holywood, Ards and North Down
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.64 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.28 μg/m³
0
55
155
255
425
605+
33.90 ppb
0
55
71
86
201
201+
0.31 ppb
0
36
76
186
605
1005+
3.24 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Holywood, Ards and North Down
Holywood, Ards and North Down
Scroll To Air Quality MapLoading...
AQI 32
Good
3.52μg/m³
PM2.5
8.97μg/m³
PM10
34.76ppb
O3
0.26ppb
SO2
2.26ppb
NO2
0.12ppm
CO
AQI 34
Good
3.14μg/m³
PM2.5
9.08μg/m³
PM10
37.37ppb
O3
0.24ppb
SO2
2.41ppb
NO2
0.12ppm
CO
AQI 27
Good
5.18μg/m³
PM2.5
10.49μg/m³
PM10
29.22ppb
O3
0.40ppb
SO2
4.78ppb
NO2
0.13ppm
CO
AQI 34
Good
2.91μg/m³
PM2.5
8.62μg/m³
PM10
37.18ppb
O3
0.17ppb
SO2
1.56ppb
NO2
0.12ppm
CO
AQI 35
Good
2.88μg/m³
PM2.5
8.73μg/m³
PM10
37.57ppb
O3
0.20ppb
SO2
1.62ppb
NO2
0.12ppm
CO
AQI 35
Good
3.09μg/m³
PM2.5
9.43μg/m³
PM10
38.27ppb
O3
0.22ppb
SO2
1.75ppb
NO2
0.12ppm
CO
Air quality and pollutant data for Ards and North Down, UK are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Holywood, Ards and North Down is updated every hour for accuracy.
In the past 24 hours, the air quality in Holywood, Ards and North Down was at its worst at 01:00:00 on 2025-12-28.
In the last 24 hours, the best air quality in Holywood, Ards and North Down was observed at 07:00:00 on 2025-12-28.
As of now, the AQI in Holywood, Ards and North Down is 31, indicating Good conditions.
Holywood, Ards and North Down air has the highest levels of O3.
Poor air quality in Holywood, Ards and North Down means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Holywood, Ards and North Down are currently 3.64 μg/m3.
The PM10 concentration in Holywood, Ards and North Down is 9.277 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Holywood, Ards and North Down is 0.12 ppm.
Currently, Holywood, Ards and North Down has a sulfur dioxide (SO2) concentration of 0.309 ppb.
The current ozone (O3) level in Holywood, Ards and North Down at the moment is 33.9 ppm.
Nitrogen dioxide (NO2) level in Holywood, Ards and North Down at the moment is 3.239 ppb.
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