Pembrokeshire of managed or unmanaged woodland. Estimates of livestock included 17,810 horses, 92,386 cattle, 157,973 sheep and 31,673 pigs. Of 5,981 agricultural holdings, more than half were between 5 and 50 acres. Pembrokeshire had a flourishing wool industry. There are still working woollen mills at Solva and Tregwynt. Pembrokeshire has good soil and benefits from the Gulf Stream, which provides a mild climate and a longer growing season than other parts of Wales. Pembrokeshire's mild climate means that crops such as its new potatoes (which have protected geographical status under European law) often arrive in British shops earlier in the year
Pembrokeshire to its proximity to the relatively warm Atlantic Ocean. Inland, average temperatures tend to fall 0.5 °C for each 100 metres increase in height. The air pollution rating of Pembrokeshire is "Good", the lowest rating. The rocks in the county were formed between 600 and 290 million years ago. More recent rock formations were eroded when sea levels rose 80 million years ago, at the end of the Cretaceous Period. Around 60 million years ago, the Pembrokeshire landmass emerged through a combination of uplift and falling sea levels; the youngest rocks, from the Carboniferous Period, contain the Pembrokeshire Coalfield. The