Air Quality in Merthyr Tydfil, United Kingdom

Rain
15.3°C · 66.5% humidity
15.3°
Feels 15.3°
9
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
40 5am
47
47
9 8am
20
20
26 11am
30
33
35 2pm
36
37
38 5pm
39
39
39 8pm
40
40
47 11pm
47
47
47 2am
47
47
Station readings 8h ago
AQI 153
PM2.5 59.4 µg/m³ · 8h ago
CAMS model adj +13
27
34
34
34
34
27
27
27
27
27
27
27
27
27
27
27
27
27
34
34
34
34
34
34
AD 728×90

Air Quality Index Trend

24h · 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.

66.5%
Humidity
87.9 km/h
Wind WSW
1010.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
9
2.2 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Merthyr Tydfil?

Temperature & Precipitation

PM2.5 Trend

24h · 1 station
PM2.52.2 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (2 stations within 25 km)
2.2
Median
2.2
Average
2.2
Low
2.2
High
PM2.5 µg/m³ · Model: 7.1 · Bias: +4.9

What is the 7-day forecast for Merthyr Tydfil?

08-03
31.8° 13.8°
4.0 mm
08-04
22.7° 10.8°
08-05
19.9° 11.8°
0.06 mm
08-06
19.0° 12.5°
0.75 mm
08-07
21.5° 10.6°
1.0 mm
08-08
17.5° 10.8°
0.94 mm
08-09
17.0° 7.1°
0.06 mm
Both models agree Avg diff: 3.3°C

Where are air quality stations near Merthyr Tydfil?

–
Rhondda Mountain Ash
7.1 km
61
Rhondda Glyncoch Garth Avenue, United Kingdom
14.6 km PM2.5: 16.9 µg/m³
55
Rhondda Glyncoch Garth Avenue, United Kingdom
14.6 km PM2.5: 14.0 µg/m³
65
Rhondda Glyncoch Garth Avenue, United Kingdom
14.6 km PM2.5: 18.8 µg/m³
–
Rhondda Pontypridd Gelliwastad Rd
16.1 km
–
Hafod-yr-ynys Hill Roadside
18.4 km
–
Nantgarw Road
21.7 km
14
Caerphilly White Street, United Kingdom
22.3 km PM2.5: 3.4 µg/m³
14
Caerphilly White Street, United Kingdom
22.3 km PM2.5: 3.4 µg/m³
65
Caerphilly White Street, United Kingdom
22.3 km PM2.5: 18.8 µg/m³

What cities are near Merthyr Tydfil?

9 Aberdare 12 Rhondda 9 Ebbw Vale 12 Gelligaer 13 Blackwood 16 Tonypandy 10 Pontypridd 9 Caerphilly 12 Pontypool 15 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 2026-08-08T07:31 UTC.