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St-Athan observations (nearest observation site to Mountain Ash)

Mountain Ash forecast
Tue 23 May 2017
0800 0900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300
Drizzle Drizzle Overcast Overcast Overcast Mist Overcast Overcast Overcast Cloudy Overcast Mist Mist Overcast Mist Fog
13.2 ° 13.4 ° 13.6 ° 13.7 ° 14.2 ° 14.3 ° 14.7 ° 15.1 ° 15.4 ° 14.7 ° 14.2 ° 13.8 ° 13.6 ° 13.3 ° 13.2 ° 13.3 °
Wind direction, speed & gust (mph) arrow down
W 9 WSW 9 WSW 11 W 13 W 13 W 13 W 11 W 13 W 11 W 10 W 9 WNW 10 WNW 9 W 8 W 7 W 6
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
P P M P M P G M G G M M P M M VP
Humidity arrow down
99% 100% 99% 99% 99% 98% 93% 93% 90% 91% 94% 96% 98% 99% 99% 99%
Pressure (hPa) arrow down
1020 1021 1021 1022 1022 1023 1023 1023 1023 1024 1024 1024 1025 1025 1026 1026
Pressure Tendency (F = Falling, R = Rising, S = Steady) arrow down
R R R R R R R R R R R R R R R R
Wed 24 May 2017
0000 0100 0200 0300 0400 0500 0600 0700 0800
Overcast Mist Overcast Overcast Cloudy Mist Mist Fog Sunny intervals
13.1 ° 13.1 ° 13.0 ° 13.1 ° 13.1 ° 13.0 ° 12.7 ° 12.1 ° 13.5 °
Wind direction, speed & gust (mph) arrow down
W 9 W 9 WNW 11 WNW 7 NW 8 WNW 8 WNW 6 WNW 6 W 6
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
P M P P P M M VP M
Humidity arrow down
99% 99% 100% 99% 100% 96% 97% 99% 99%
Pressure (hPa) arrow down
1026 1026 1026 1026 1026 1026 1026 1026 1027
Pressure Tendency (F = Falling, R = Rising, S = Steady) arrow down
R R R R R F R R R
More detail arrow down

Issued at: 0800 on Wed 24 May 2017

= No Data