Data sources and licences
We only use open sources whose licences allow reuse, including commercial reuse. We name the source next to every data point.
| Warstwa / Layer | Źródło / Source | Licencja / Licence |
|---|---|---|
| Zorza / Aurora (Kp, OVATION) | NOAA Space Weather Prediction Center | Public domain (U.S. Government work) |
| Kp index | GFZ Helmholtz Centre for Geosciences | CC BY 4.0 |
| Trzęsienia / Earthquakes | U.S. Geological Survey | Public domain |
| Jakość powietrza / Air quality (PL) | Główny Inspektorat Ochrony Środowiska (GIOŚ) - EKOINFONET | CC BY 4.0, dane bieżące niezweryfikowane / current unverified data |
| Jakość powietrza / Air quality (świat / world) | NASA GMAO GEOS-CF (Keller et al. 2021, doi:10.1029/2020MS002413; Knowland et al. 2022, doi:10.1029/2021MS002852) | NASA data, no restrictions on use |
| Pożary / Wildfires | NASA FIRMS (VIIRS NOAA-20) via NASA GIBS, NASA EONET | NASA data, no restrictions on use |
| Wulkany / Volcanoes | Global Volcanism Program, Smithsonian Institution (Volcanoes of the World), USGS Volcano Hazards Program | Fakty z cytowaniem źródła / facts with citation; USGS: public domain |
| Mapa pogody / Weather map (wiatr, temperatura, opady, zachmurzenie, ciśnienie / wind, temperature, precipitation, cloud cover, pressure) | ECMWF Open Data, IFS 0.25°. This service is based on data and products of the European Centre for Medium-Range Weather Forecasts (ECMWF). Source: www.ecmwf.int. Data modified: resampled to 0.5°, smoothed and rounded to 8-bit values. ECMWF does not accept any liability whatsoever for any error or omission in the data, their availability, or for any loss or damage arising from their use. | CC BY 4.0 |
| Pioruny / Lightning (obie Ameryki / the Americas) | NOAA GOES-19 / GOES-18 Geostationary Lightning Mapper (L2 LCFA, NOAA Open Data on AWS). Data modified: flash centroids from the last 15 minutes binned to a 0.05° grid. | Public domain (U.S. Government) |
| Pioruny / Lightning (Europa i Afryka / Europe and Africa) | This service is based on EUMETSAT Meteosat Third Generation (MTG) Lightning Imager data (Accumulated Flash Area) via EUMETView. | CC BY 4.0 (EUMETSAT Core data) |
| Wydarzenia na pasku mapy / Events bar (cyklony, powodzie, pożary, erupcje / cyclones, floods, wildfires, eruptions) | GDACS - Global Disaster Alert and Coordination System (European Commission JRC, UN OCHA). GDACS notifications are automatic estimates and do not replace official warnings. | © European Union, reuse authorised with acknowledgement of the source |
| Ostrzeżenia przed tornadem, tsunami i huraganowym wiatrem (USA) / Tornado, tsunami and extreme wind warnings (USA) | NOAA National Weather Service (api.weather.gov) | Public domain (U.S. Government) |
| Kontury krajów / Country outlines | Natural Earth (world-atlas) | Public domain |
| Miasta i miejscowości / Cities and towns (nazwy, współrzędne, liczba mieszkańców / names, coordinates, population) | GeoNames | CC BY 4.0 |
| Klimat miejsc, temperatura morza / Climate normals, sea temperature | NASA POWER (MERRA-2, 2001-2020). Data modified: day and night temperatures computed from the mean and the mean daily range, sea temperature from the nearest grid point over the sea. | CC BY 4.0 |
| Radar opadów, Europa / Precipitation radar, Europe | EUMETNET OPERA via Open Radar Data. Data modified: reprojected to Web Mercator and coloured by reflectivity. | CC BY 4.0 |
| Radar opadów, USA / Precipitation radar, USA | NOAA/NWS MRMS base reflectivity, served by NOAA NCEP | Public domain (U.S. Government) |
| Radar opadów, Kanada / Precipitation radar, Canada | Contains information licensed under the Data Server End-use Licence of Environment and Climate Change Canada (MSC GeoMet). Colours converted to the Zenitmap scale. | ECCC Data Server End-use Licence |
| Radar opadów, Japonia / Precipitation radar, Japan | 出典：気象庁ホームページ（高解像度降水ナウキャスト）を加工して作成. Colours converted to the Zenitmap scale. | 気象庁ホームページ利用規約 |
| Opady z satelitów / Satellite precipitation | NASA GPM IMERG 30-minute precipitation rate, imagery from NASA GIBS, part of NASA ESDIS | NASA open data policy |
| Zanieczyszczenie światłem / Light pollution | NASA Black Marble VNP46A4, Collection 2 (LAADS DAAC). Data modified: resampled to map tiles, log-scaled to 8 bits; skyglow estimated with Walker's law. | Public domain (NASA) |
| ISS, Starlink, satelity / satellites (stacje, nawigacja / navigation, pogodowe / weather, obserwacja Ziemi / Earth observation, naukowe / science, łączność / communications, wojskowe / military, GEO) | CelesTrak (GP element sets and SATCAT catalogue, T.S. Kelso; types from CelesTrak groups and the officially stated purpose of each programme), satellite.js (MIT) | CelesTrak usage policy |
| Mapa / Base map | © OpenStreetMap contributors, © CARTO | ODbL / CARTO basemap terms |
| Kamery / Webcams | Podane przy każdej kamerze / Named next to each camera | Zgodnie z warunkami źródła / Per source terms |
How we estimate
Chance of seeing the aurora: we compare NOAA's Kp forecast with an approximate aurora visibility boundary for the city's geomagnetic latitude (dipole model). It is an estimate, not a measurement.
ISS passes: calculated in your browser from current orbital data (CelesTrak) with satellite.js. We show passes when the station is sunlit and the sky is dark.
Webcams
We publish webcams from official portals whose terms allow it and webcams shared with the owner's consent. We show low-resolution images, keep no archive and apply no face or plate recognition. Owners can request removal.