Air Quality in Merthyr Tydfil, United Kingdom
Windy
16.9°C · 74.6% humidity
16.9°
Feels 16.9°
16
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
AQI Forecast
Calibrated
55
3pm
55
55
16
6pm
27
35
41
9pm
45
48
50
12am
51
52
53
3am
54
54
54
6am
54
55
55
9am
55
55
62
12pm
62
55
Station readings
26h ago
AQI 52
PM2.5 12.6 µg/m³ · 26h ago
CAMS model
adj +28
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
27
34
34
27
Air Quality Index Trend
4h · 1 stnMerthyr Tydfil'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.
74.6%
Humidity
62.6 km/h
Wind ENE
1023.3 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
3.8 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Merthyr Tydfil?
Temperature & Precipitation
PM2.5 Trend
4h · 1 stationPM2.53.8 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
Station readings (2 stations within 25 km)
3.8
Median
3.8
Average
3.8
Low
3.8
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +2.5
What is the 7-day forecast for Merthyr Tydfil?
05-29
16.9° 10.4°
4.0 mm
05-30
20.0° 11.7°
0.56 mm
05-31
15.5° 9.3°
0.62 mm
06-01
17.2° 9.0°
0.81 mm
06-02
14.5° 9.1°
13.19 mm
06-03
16.5° 9.3°
0.81 mm
06-04
22.1° 6.8°
3.5 mm
Both models agree
Avg diff: 2.9°C
Where are air quality stations near Merthyr Tydfil?
–
Rhondda Mountain Ash
–
Rhondda Pontypridd Gelliwastad Rd
–
Hafod-yr-ynys Hill Roadside
–
Caerphilly Islwyn Road Wattsville
–
Nantgarw Road
13
Caerphilly White Street, United Kingdom
8
Caerphilly White Street, United Kingdom
What cities are near Merthyr Tydfil?
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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 2026-05-29T17:50 UTC.