Air Quality in Merthyr Tydfil, United Kingdom

Partly Cloudy
13.8°C · 53.0% humidity
13.8°
Feels 13.8°
45
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
34 5am
34
34
45 8am
42
40
38 11am
37
36
35 2pm
35
35
35 5pm
34
34
34 8pm
34
34
34 11pm
34
34
34 2am
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
AD 728×90

Air Quality Index Trend

12h · 1 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.

53.0%
Humidity
37.8 km/h
Wind ENE
1014.3 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
45
10.7 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Merthyr Tydfil?

Temperature & Precipitation

PM2.5 Trend

12h · 1 station
PM2.510.7 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
Station readings (3 stations within 25 km)
10.7
Median
11.23
Average
9.6
Low
13.5
High
PM2.5 µg/m³ · Model: 6.0 · Bias: -4.7

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: 2.8°C

Where are air quality stations near Merthyr Tydfil?

–
Rhondda Mountain Ash
7.1 km
–
Rhondda Pontypridd Gelliwastad Rd
16.1 km
–
Hafod-yr-ynys Hill Roadside
18.4 km
–
Caerphilly Islwyn Road Wattsville
21.6 km
–
Nantgarw Road
21.7 km
56
Caerphilly White Street, United Kingdom
22.3 km PM2.5: 14.5 µg/m³
36
Caerphilly White Street, United Kingdom
22.3 km PM2.5: 8.6 µg/m³

What cities are near Merthyr Tydfil?

44 Aberdare 46 Rhondda 46 Ebbw Vale 46 Gelligaer 48 Blackwood 47 Tonypandy 43 Pontypridd 54 Caerphilly 34 Pontypool 45 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 2026-07-22T07:48 UTC.