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
AD 728×90

Air Quality Index Trend

4h · 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.

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▲
16
3.8 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Merthyr Tydfil?

Temperature & Precipitation

PM2.5 Trend

4h · 1 station
PM2.53.8 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
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
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
13
Caerphilly White Street, United Kingdom
22.3 km PM2.5: 3.1 µg/m³
8
Caerphilly White Street, United Kingdom
22.3 km PM2.5: 1.9 µg/m³

What cities are near Merthyr Tydfil?

16 Aberdare 20 Rhondda 16 Ebbw Vale 24 Gelligaer 24 Blackwood 24 Tonypandy 24 Pontypridd 16 Caerphilly 26 Pontypool 26 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 2026-05-29T17:50 UTC.