Air Quality in Merthyr Tydfil, United Kingdom
Partly Cloudy
13.8°C · 53.0% humidity
13.8°
Feels 13.8°
44
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
AQI Forecast
Calibrated
34
4am
34
34
44
7am
41
39
38
10am
37
36
35
1pm
35
35
34
4pm
34
34
34
7pm
34
34
34
10pm
34
34
34
1am
34
34
Station readings
44
CAMS model
adj +9
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Air Quality Index Trend
11h · 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.
53.0%
Humidity
37.8 km/h
Wind ENE
1014.3 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
10.6 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Merthyr Tydfil?
Temperature & Precipitation
PM2.5 Trend
11h · 1 stationPM2.510.6 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
Station readings (1 station within 25 km)
10.6
Median
10.6
Average
10.6
Low
10.6
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -4.6
What is the 7-day forecast for Merthyr Tydfil?
07-22
18.1° 13.7°
3.81 mm
07-23
16.4° 12.0°
0.94 mm
07-24
16.4° 12.2°
9.19 mm
07-25
19.2° 7.6°
0.5 mm
07-26
21.5° 9.2°
0.5 mm
07-27
18.7° 14.0°
3.06 mm
07-28
23.8° 14.1°
0.06 mm
Both models agree
Avg diff: 2.7°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
56
Caerphilly White Street, United Kingdom
36
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 2026-07-22T06:57 UTC.