Air Quality in Merthyr Tydfil, United Kingdom

Partly Cloudy
13.4°C · 64.8% humidity
13.4°
Feels 13.4°
46
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
15 1pm
18
19
46 4pm
40
35
32 7pm
50
48
47 10pm
46
46
25 1am
45
45
44 4am
24
24
24 7am
24
24
24 10am
24
24
Station readings
15
18
19
19
CAMS model adj -10
27
27
27
34
34
34
34
54
54
54
54
54
34
54
54
54
34
34
34
34
34
34
34
34
AD 728×90

Air Quality Index Trend

34h · 2 stn

Merthyr 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.

64.8%
Humidity
25.8 km/h
Wind WSW
1029.2 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
46
11.13 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Merthyr Tydfil?

Temperature & Precipitation

PM2.5 Trend

34h · 2 stations
PM2.511.13 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (4 stations within 25 km)
11.13
Median
12.8
Average
4.6
Low
27.3
High
PM2.5 µg/m³ · Model: 7.1 · Bias: -4.0

What is the 7-day forecast for Merthyr Tydfil?

09-05
13.4° 6.9°
0.81 mm
09-06
17.5° 9.4°
0.38 mm
09-07
13.0° 9.9°
11.94 mm
09-08
20.8° 6.4°
0.13 mm
09-09
16.5° 6.6°
1.06 mm
09-10
17.1° 10.8°
1.12 mm
09-11
14.2° 8.5°
0.38 mm
Both models agree Avg diff: 3.1°C

Where are air quality stations near Merthyr Tydfil?

–
Rhondda Mountain Ash
7.1 km
14
Rhondda Glyncoch Garth Avenue, United Kingdom
14.6 km PM2.5: 3.4 µg/m³
20
Rhondda Glyncoch Garth Avenue, United Kingdom
14.6 km PM2.5: 4.8 µg/m³
15
Rhondda Glyncoch Garth Avenue, United Kingdom
14.6 km PM2.5: 3.6 µg/m³
19
Rhondda Glyncoch Garth Avenue, United Kingdom
14.6 km PM2.5: 4.6 µg/m³
19
Rhondda Glyncoch Garth Avenue, United Kingdom
14.6 km PM2.5: 4.6 µg/m³
–
Rhondda Pontypridd Gelliwastad Rd
16.1 km
–
Hafod-yr-ynys Hill Roadside
18.4 km
–
Nantgarw Road
21.7 km
19
Caerphilly White Street, United Kingdom
22.3 km PM2.5: 4.6 µg/m³

What cities are near Merthyr Tydfil?

45 Aberdare 40 Rhondda 51 Ebbw Vale 45 Gelligaer 47 Blackwood 38 Tonypandy 38 Pontypridd 61 Caerphilly 42 Pontypool 46 Risca
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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 2026-09-05T15:10 UTC.