The map shows weather-related strain anywhere in Poland: today, tomorrow and the day after. Click the map, search for a location or use your current location; the panel explains the most important factors and what you can do.
A number from 0 to 10 combining five scores: head, circulation, sleep, breathing and energy. Below 3.5 is favourable, 3.5–6.4 moderate and 6.5 or higher demanding. Sensitivity profiles increase the weight of the relevant system.
Daily pressure changes, apparent temperature and its changes, humidity, PM2.5, birch, alder, grass and ragweed pollen, UV and geomagnetic activity (Kp). Each indicator has a ‘Why?’ explanation and source.
Weather and air-quality forecasts come from Open-Meteo (ECMWF, DWD and CAMS Europe); Kp comes from NOAA SWPC. Daily scores use noon values compared with noon the previous day.
For your selected location, we show morning-light timing, when daytime or evening glasses may help, and bedtime preparation. Tips change with pressure drops, heat or pollution.
Biometeorology studies how atmospheric conditions affect people. Everyone responds differently, but several factors recur in research and reports from weather-sensitive people. Below are the ones included in this map.
Weather sensitivity can involve headaches, sleepiness, irritability, reduced concentration, joint pain or lighter sleep during weather changes. It is not a separate disease, and severity varies widely. It is reported more often by people with migraine, cardiovascular or rheumatic conditions.
A passing weather front is a commonly reported trigger, changing pressure, temperature, humidity and wind within hours. The map therefore considers daily changes, not only current values.
Average sea-level pressure is about 1013 hPa, but the rate of change matters more for wellbeing. Some migraine studies associate attacks with rapid pressure drops. We treat a daily change above 6 hPa as rapid.
The ‘Pressure change’ layer shows where changes are greatest in Poland. The ‘Head / migraine’ score rises with these changes and very high humidity.
Apparent temperature combines air temperature, humidity, wind and sunshine. Above about 30°C, heat dissipation increases: vessels dilate, blood pressure can fall, heart rate and water loss rise. Older people and those with heart disease may be especially affected.
Rapid daily temperature changes also affect circulation. Nights with minimum temperatures of 18°C or more make cooling before sleep harder, so the model includes them in its sleep score.
PM2.5 particles are small enough to reach deep into the lungs. WHO's 2021 guideline recommends a daily average no higher than 15 µg/m³. Levels in Poland's heating season can exceed this substantially, especially on still evenings.
Birch, alder, grass and ragweed are major airborne allergens in Poland, each with its own season. The map uses the highest of these four pollen concentrations.
Solar activity disturbs Earth's magnetic field. The planetary Kp index ranges from 0 to 9; Kp 5 marks a geomagnetic storm. Some studies link these periods to sleep and blood-pressure changes, but evidence is weaker than for weather and pollution.
Kp therefore has little weight, mainly in the sleep score. If NOAA data is unavailable, the model defaults to a quiet day rather than suggesting an unsupported storm.
On the WHO UV scale, 3–5 is moderate, 6–7 high and 8 or above very high. Protect your skin and eyes around midday when UV is high.
Light also influences circadian rhythm. Morning daylight helps set the body clock, while limiting bright blue light in the evening supports sleep. Short autumn and winter days can affect energy, so the panel shows day length and a local light plan.
Switch to ‘Tomorrow’. If the Bio-index rises, plan demanding tasks for a calmer day and allow yourself more time on the difficult one.
The panel identifies the most affected system. During pressure drops, drink water regularly and avoid skipping meals; in heat, cool your bedroom and avoid midday exertion; with pollution or pollen, exercise indoors.
Regular bedtimes and wake-up times are a simple way to soften a difficult day. Get morning daylight and limit bright screens and heavy evening meals.
Compare the 14-day Bio-index chart with your wellbeing. Over several weeks, you can see which sensitivity profile fits you best.
Weather-related strain at locations in Poland today, tomorrow and the day after. Colours represent the 0–10 Bio-index or pressure change, apparent temperature, PM2.5, pollen and UV. Click a point for explanations and practical tips.
A 0–10 score combining head, circulation, sleep, breathing and energy. Below 3.5 is favourable, 3.5–6.4 moderate, and 6.5 or above demanding. The total combines 60% of the average and 40% of the highest-strain system, so one strong factor can raise the score.
Feeling worse during weather changes: headaches, sleepiness, irritability, joint pain or sleep difficulties. It is not a separate disease, and sensitivity varies. Common triggers are rapid pressure and temperature changes, often during a passing front.
For some people. Research suggests an association between rapid pressure drops and attacks, but not for everyone or every change. The model uses daily pressure change, treating more than 6 hPa in either direction as rapid.
Solar activity disturbs Earth's magnetic field, measured by Kp from 0–9. Kp 5 marks a storm. Health evidence is weaker than for pressure or pollution, so Kp has little weight, mainly in sleep. Unavailable NOAA data defaults to a quiet day.
Weather and air quality come from Open-Meteo (ECMWF, DWD, CAMS Europe); Kp comes from NOAA SWPC. Data loads when you open the page. Daily scores compare noon with noon the previous day.
IMGW-PIB publishes official regional forecasts. Biohac lets you choose any point and separates five body systems, sensitivity profiles, 14-day history and light planning. It complements official forecasts rather than replacing them.
Start with the main strain identified by the panel. With pressure drops, maintain regular hydration and meals; in heat, cool the bedroom; with pollution or pollen, limit outdoor exertion. Keep a regular bedtime and get morning light. Consult a doctor for severe or unusual symptoms.
Yes, up to 6 places, with today's scores at the top of the panel. Saved places and profiles remain only in your browser; no account is required and they are not sent to Biohac.
The Biohac Bio-index is an educational model, not medical advice. Consult a doctor if symptoms are severe or unusual. Official biometeorological forecasts are published by IMGW-PIB.