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
AD 728×90

Air Quality Index Trend

11h · 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
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
44
10.6 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Merthyr Tydfil?

Temperature & Precipitation

PM2.5 Trend

11h · 1 station
PM2.510.6 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
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
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 45 Rhondda 44 Ebbw Vale 43 Gelligaer 43 Blackwood 45 Tonypandy 44 Pontypridd 41 Caerphilly 41 Pontypool 40 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 2026-07-22T06:57 UTC.