Are there mushrooms around Porrentruy right now
Today's index is 39 out of 100. Poor — something is possible, but do not count on a full basket.
The forecast here is regional — an average over several measurement points — rather than a calculation for this town. The larger the region, the coarser the number. Data from 17 September 2026, 11:22 BST.
Porrentruy and the country around it
The ring marks Porrentruy, the dots are the rest of the measurement network in Jura. The field between points is interpolated; clicking a point opens its town.
Nearest towns
The forecast in these towns can differ — the further away, the more. In brackets, the best edible species today.
The week, species by species
22 species are in season in Jura right now — ordered by today's index. Another 3 species are out of season: the index reads zero all week.
Lactarius deliciosus
Lactarius deliciosus
Week's best 39 — on Fridayaverage 34by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3918 Sept
- Sat3619 Sept
- Sun3220 Sept
- Mon3221 Sept
- Tue3222 Sept
- Wed3323 Sept
Imleria badia
Imleria badia
Week's best 38 — on Fridayaverage 32by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3818 Sept
- Sat3319 Sept
- Sun3020 Sept
- Mon3021 Sept
- Tue2922 Sept
- Wed3023 Sept
Amanita muscaria
Amanita muscaria
Week's best 38 — on Fridayaverage 34by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3818 Sept
- Sat3619 Sept
- Sun3220 Sept
- Mon3221 Sept
- Tue3222 Sept
- Wed3123 Sept
Boletus edulis
Boletus edulis
Week's best 37 — on Fridayaverage 30by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3718 Sept
- Sat3219 Sept
- Sun2920 Sept
- Mon2821 Sept
- Tue2622 Sept
- Wed2623 Sept
Suillus granulatus
Suillus granulatus
Week's best 35 — on Fridayaverage 33by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3518 Sept
- Sat3519 Sept
- Sun3120 Sept
- Mon3221 Sept
- Tue3222 Sept
- Wed3023 Sept
Leccinum aurantiacum
Leccinum aurantiacum
Week's best 35 — on Fridayaverage 29by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3518 Sept
- Sat3219 Sept
- Sun2820 Sept
- Mon2821 Sept
- Tue2722 Sept
- Wed2523 Sept
Amanita pantherina
Amanita pantherina
Week's best 35 — on Fridayaverage 30by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3518 Sept
- Sat3219 Sept
- Sun2920 Sept
- Mon2821 Sept
- Tue2822 Sept
- Wed2623 Sept
Leccinum versipelle
Leccinum versipelle
Week's best 35 — on Fridayaverage 29by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3518 Sept
- Sat3219 Sept
- Sun2820 Sept
- Mon2821 Sept
- Tue2722 Sept
- Wed2523 Sept
Leccinum scabrum
Leccinum scabrum
Week's best 34 — on Fridayaverage 30by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3418 Sept
- Sat3319 Sept
- Sun2920 Sept
- Mon2921 Sept
- Tue2922 Sept
- Wed2623 Sept
Macrolepiota procera
Macrolepiota procera
Week's best 33 — on Fridayaverage 29by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3318 Sept
- Sat3219 Sept
- Sun2820 Sept
- Mon2821 Sept
- Tue2722 Sept
- Wed2423 Sept
Armillaria mellea
Armillaria mellea
Week's best 32average 29by the weekend steady
Conditions stay poor all week — not worth the trip yet.
- Today3218 Sept
- Sat3119 Sept
- Sun2820 Sept
- Mon2821 Sept
- Tue2922 Sept
- Wed2823 Sept
Lactarius resimus
Lactarius resimus
Week's best 32 — on Fridayaverage 27by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3218 Sept
- Sat2819 Sept
- Sun2520 Sept
- Mon2521 Sept
- Tue2422 Sept
- Wed2523 Sept
Xerocomellus chrysenteron
Xerocomellus chrysenteron
Week's best 32 — on Fridayaverage 27by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3218 Sept
- Sat2919 Sept
- Sun2620 Sept
- Mon2621 Sept
- Tue2622 Sept
- Wed2423 Sept
Russula delica
Russula delica
Week's best 32 — on Fridayaverage 26by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3218 Sept
- Sat2919 Sept
- Sun2520 Sept
- Mon2521 Sept
- Tue2422 Sept
- Wed2323 Sept
Cantharellus cibarius
Cantharellus cibarius
Week's best 31 — on Fridayaverage 25by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3118 Sept
- Sat2819 Sept
- Sun2420 Sept
- Mon2421 Sept
- Tue2222 Sept
- Wed2223 Sept
Agaricus campestris
Agaricus campestris
Week's best 30 — on Fridayaverage 26by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3018 Sept
- Sat2919 Sept
- Sun2620 Sept
- Mon2621 Sept
- Tue2522 Sept
- Wed2123 Sept
Marasmius oreades
Marasmius oreades
Week's best 30 — on Fridayaverage 26by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today3018 Sept
- Sat2919 Sept
- Sun2620 Sept
- Mon2621 Sept
- Tue2522 Sept
- Wed2223 Sept
Collybia nuda
Collybia nuda
Week's best 29average 28by the weekend steady
Conditions stay poor all week — not worth the trip yet.
- Today2918 Sept
- Sat2919 Sept
- Sun2620 Sept
- Mon2721 Sept
- Tue2822 Sept
- Wed2623 Sept
Suillus bovinus
Suillus bovinus
Week's best 29 — on Fridayaverage 25by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today2918 Sept
- Sat2719 Sept
- Sun2420 Sept
- Mon2421 Sept
- Tue2422 Sept
- Wed2323 Sept
Collybia personata
Collybia personata
Week's best 28average 27by the weekend steady
Conditions stay poor all week — not worth the trip yet.
- Today2818 Sept
- Sat2719 Sept
- Sun2520 Sept
- Mon2621 Sept
- Tue2722 Sept
- Wed2623 Sept
Lycoperdon perlatum
Lycoperdon perlatum
Week's best 28 — on Fridayaverage 26by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today2818 Sept
- Sat2819 Sept
- Sun2520 Sept
- Mon2521 Sept
- Tue2522 Sept
- Wed2223 Sept
Kuehneromyces mutabilis
Kuehneromyces mutabilis
Week's best 26 — on Fridayaverage 23by the weekend falling
Conditions are poor: even the week's best day only reaches «slow».
- Today2618 Sept
- Sat2519 Sept
- Sun2320 Sept
- Mon2321 Sept
- Tue2322 Sept
- Wed2023 Sept
Lactarius deliciosus near Porrentruy: where to look
Lactarius deliciosus: the species in brief
How to tell it
An orange cap marked with darker concentric rings. Bruised areas often turn green. The orange latex is one of the most useful identification features.
Where it grows
Associated with conifers, especially pine, in plantations, woodland edges, grass and moss.
In the kitchen
Often fried, grilled or preserved. In parts of eastern Europe it is also salted. Its firm texture and slightly resinous flavour stand up well to simple cooking.
Nutrition
Low in calories. Nutritional values vary by species, age and preparation.
This is a note about the species, not about what is in your basket. Full card with lookalikes →
Been out in Porrentruy? Tell us how it went
No sign-up, five seconds. Reports are visible to everyone and help us check the forecast — where people say “nothing out there” and the model promises a flush, the model is wrong.
Common questions
Are there mushrooms in Porrentruy in September 2026?
Today's foraging index is 39 out of 100. It is built from two weeks of rainfall, soil temperature, the length of the dry spell and each species' season, and it updates daily.
Which mushrooms are picked around Porrentruy?
There are too few records for this region to name species yet. We will not list them «from the field guide»: an unconfirmed list looks exactly like a confirmed one and is worth something else entirely.
How accurate is this forecast?
It is a model of weather and season, not an observation of the wood. It answers «is this week worth a trip» well, and it does not know what is growing round the next bend. We measure its accuracy against independent records and publish the result — without that number a forecast stays a promise.
The index is high but I found nothing — why?
The index reads weather and season — things that are the same for tens of kilometres around. It does not know your particular wood, and that is where the mushroom grows. The usual reasons: wrong trees — every species has its own, and no weather makes up for the wrong stand; the wood was felled recently or is young — the mycelium takes years to recover; the spot is picked out — everything near a road or a car park goes over a weekend; the flush has been taken — you came a day after those who came on time; or the flush passed and slugs and larvae got there first, which the model cannot see. The reverse holds too: a low index does not mean an empty wood. It means the conditions are against you, not that there is nothing there.