Air Quality in Castlereagh, United Kingdom

Rain
11.8°C · 97.2% humidity
11.8°
Feels 11.8°
33
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
9 12am
9
9
33 3am
27
22
19 6am
17
15
14 9am
13
13
12 12pm
12
12
11 3pm
18
11
11 6pm
11
11
9 9pm
9
9
Station readings 48h ago
AQI 9
PM2.5 2.2 µg/m³ · 48h ago
AD 728×90

Air Quality Index Trend

44h · 2 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.

97.2%
Humidity
60.6 km/h
Wind W
1005.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
33
7.92 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Castlereagh?

Temperature & Precipitation

PM2.5 Trend

44h · 2 stations
PM2.57.92 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (3 stations within 25 km)
7.92
Median
8.3
Average
7.2
Low
9.1
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -1.9

What is the 7-day forecast for Castlereagh?

08-03
18.4° 11.5°
3.13 mm
08-04
17.4° 9.1°
3.88 mm
08-05
15.3° 9.6°
2.69 mm
08-06
17.5° 12.6°
0.38 mm
08-07
15.4° 9.4°
0.69 mm
08-08
15.0° 8.9°
0.69 mm
08-09
14.1° 8.7°
3.81 mm
Both models agree Avg diff: 2.5°C

Where are air quality stations near Castlereagh?

25
Belfast Stockman's Lane, United Kingdom
5.8 km PM2.5: 6.0 µg/m³
26
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 6.2 µg/m³
57
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 15.0 µg/m³
23
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 5.5 µg/m³
13
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 3.1 µg/m³
26
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 6.2 µg/m³
25
North Down Holywood A2, United Kingdom
8.2 km PM2.5: 6.0 µg/m³
13
Lisburn Dunmurry Seymour Hill, United Kingdom
8.7 km PM2.5: 3.1 µg/m³
17
Lisburn Dunmurry Seymour Hill, United Kingdom
8.7 km PM2.5: 4.1 µg/m³
17
Lisburn Dunmurry Seymour Hill, United Kingdom
8.7 km PM2.5: 4.1 µg/m³

What cities are near Castlereagh?

30 Belfast 33 Newtownabbey 35 Lisburn 34 Newtownards 34 Carrickfergus 33 Bangor 31 Antrim 25 Larne 23 Craigavon 16 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 2026-08-08T02:08 UTC.