Air Quality in Castlereagh, United Kingdom

Cloudy
13.3°C · 71.2% humidity
13.3°
Feels 13.3°
24
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast
27 1pm
27
27
24 4pm
27
27
34 7pm
34
34
34 10pm
34
34
27 1am
27
27
27 4am
27
27
25 7am
25
25
25 10am
25
25
AD 728×90

Air Quality Index Trend

45h · 7 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.

71.2%
Humidity
22.0 km/h
Wind SW
1028.5 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
24
5.66 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Castlereagh?

Temperature & Precipitation

PM2.5 Trend

45h · 7 stations
PM2.55.66 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (3 stations within 25 km)
5.66
Median
5.43
Average
5.0
Low
6.0
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +0.6

What is the 7-day forecast for Castlereagh?

09-05
14.2° 5.9°
09-06
16.7° 8.7°
0.44 mm
09-07
13.8° 11.6°
6.5 mm
09-08
17.1° 4.2°
1.63 mm
09-09
13.8° 6.6°
0.56 mm
09-10
14.6° 12.0°
6.69 mm
09-11
12.6° 7.9°
0.75 mm
Both models agree Avg diff: 3.4°C

Where are air quality stations near Castlereagh?

25
Belfast Centre, United Kingdom
4.1 km PM2.5: 6.0 µg/m³
21
Belfast Stockman's Lane, United Kingdom
5.8 km PM2.5: 5.0 µg/m³
22
Belfast Stockman's Lane, United Kingdom
5.8 km PM2.5: 5.3 µg/m³
21
Belfast Stockman's Lane, United Kingdom
5.8 km PM2.5: 5.0 µg/m³
20
Belfast Stockman's Lane, United Kingdom
5.8 km PM2.5: 4.8 µg/m³
20
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 4.8 µg/m³
21
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 5.0 µg/m³
20
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 4.8 µg/m³
20
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 4.8 µg/m³
19
Lisburn Dunmurry Seymour Hill, United Kingdom
8.7 km PM2.5: 4.6 µg/m³

What cities are near Castlereagh?

25 Belfast 22 Newtownabbey 23 Lisburn 22 Newtownards 22 Carrickfergus 22 Bangor 22 Antrim 21 Larne 10 Craigavon 27 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 2026-09-05T15:50 UTC.