Air Quality in Castlereagh, United Kingdom

Partly Cloudy
15.9°C · 69.3% humidity
15.9°
Feels 15.9°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
5 stations

Nearby Monitoring Stations

AQI Forecast
25 4pm
25
27
38 7pm
35
33
31 10pm
30
29
28 1am
26
26
26 4am
25
25
25 7am
25
25
25 10am
25
25
25 1pm
25
25
AD 728×90

Air Quality Index Trend

45h · 5 stn

Castlereagh's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.

69.3%
Humidity
24.9 km/h
Wind E
1026.0 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
38
9.03 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Castlereagh?

Temperature & Precipitation

PM2.5 Trend

45h · 5 stations
PM2.59.03 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (5 stations within 25 km)
9.03
Median
11.48
Average
5.0
Low
32.5
High
PM2.5 µg/m³ · Model: 6.15 · Bias: -2.9

What is the 7-day forecast for Castlereagh?

05-29
15.9° 9.5°
5.56 mm
05-30
18.0° 9.3°
0.13 mm
05-31
9.9° 8.0°
0.19 mm
06-01
15.5° 8.9°
2.12 mm
06-02
13.4° 9.6°
2.0 mm
06-03
17.5° 9.8°
0.13 mm
06-04
21.4° 13.0°
1.13 mm
Both models agree Avg diff: 3.0°C

Where are air quality stations near Castlereagh?

17
Belfast Centre, United Kingdom
4.1 km PM2.5: 4.1 µg/m³
22
Belfast Centre, United Kingdom
4.1 km PM2.5: 5.3 µg/m³
15
Belfast Stockman's Lane, United Kingdom
5.8 km PM2.5: 3.6 µg/m³
68
Belfast Stockman's Lane, United Kingdom
5.8 km PM2.5: 20.2 µg/m³
61
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 16.9 µg/m³
85
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 28.3 µg/m³
16
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 3.8 µg/m³
103
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 36.3 µg/m³
21
Lisburn Dunmurry Seymour Hill, United Kingdom
8.7 km PM2.5: 5.0 µg/m³
151
Lisburn Dunmurry Seymour Hill, United Kingdom
8.7 km PM2.5: 55.5 µg/m³

What cities are near Castlereagh?

29 Belfast 56 Newtownabbey 24 Lisburn 56 Newtownards 59 Carrickfergus 59 Bangor 26 Antrim 66 Larne 41 Craigavon 40 Banbridge
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T18:43 UTC.