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)
38
Good
Holywood, Ards and North Down
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.57 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.78 μg/m³
0
55
155
255
425
605+
38.63 ppb
0
55
71
86
201
201+
1.20 ppb
0
36
76
186
605
1005+
6.27 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Holywood, Ards and North Down
Holywood, Ards and North Down
Scroll To Air Quality MapLoading...
AQI 38
Good
6.57μg/m³
PM2.5
20.20μg/m³
PM10
38.65ppb
O3
1.13ppb
SO2
6.31ppb
NO2
0.13ppm
CO
AQI 38
Good
6.60μg/m³
PM2.5
19.74μg/m³
PM10
40.70ppb
O3
1.58ppb
SO2
4.52ppb
NO2
0.13ppm
CO
AQI 38
Good
7.28μg/m³
PM2.5
16.78μg/m³
PM10
39.27ppb
O3
0.45ppb
SO2
5.46ppb
NO2
0.13ppm
CO
AQI 38
Good
6.62μg/m³
PM2.5
18.97μg/m³
PM10
41.32ppb
O3
1.43ppb
SO2
5.64ppb
NO2
0.13ppm
CO
AQI 38
Good
6.62μg/m³
PM2.5
18.89μg/m³
PM10
40.94ppb
O3
1.48ppb
SO2
5.76ppb
NO2
0.13ppm
CO
AQI 40
Good
6.66μg/m³
PM2.5
18.05μg/m³
PM10
42.51ppb
O3
1.79ppb
SO2
4.17ppb
NO2
0.13ppm
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 09:00:00 on 2026-03-29.
In the last 24 hours, the best air quality in Holywood, Ards and North Down was observed at 04:00:00 on 2026-03-29.
As of now, the AQI in Holywood, Ards and North Down is 38, indicating Good conditions.
Holywood, Ards and North Down air has the highest levels of PM2.5.
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 6.573 μg/m3.
The PM10 concentration in Holywood, Ards and North Down is 19.784 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Holywood, Ards and North Down is 0.127 ppm.
Currently, Holywood, Ards and North Down has a sulfur dioxide (SO2) concentration of 1.199 ppb.
The current ozone (O3) level in Holywood, Ards and North Down at the moment is 38.634 ppm.
Nitrogen dioxide (NO2) level in Holywood, Ards and North Down at the moment is 6.269 ppb.
All Rights Reserved © Ambee Inc. 2025