Weather Data
Surface & upper-air maps, soundings, RAP mesoanalysis, and isentropic tools for diagnosing current setups.
Analysis
Explore a wide range of real-time weather analysis data, featuring in-situ observations such as surface reports, atmospheric soundings, and upper-air measurements. Data is available in multiple formats—from raw, un-analyzed reports to processed analyses and mesoanalysis products. Printable maps of raw datasets are also provided for those who prefer traditional hand-drawn analysis.
Satellite & Radar
Access real-time GOES weather satellite imagery with all 16 ABI channels available, complemented by a collection of invaluable RGB products for enhanced interpretation. National radar mosaics are also provided, offering an additional perspective on current conditions. A large suite of overlay data is available to enrich these datasets, greatly improving situational awareness, clarifying immediate weather conditions, and informing short-term weather forecasts.
Nexrad Dual-Pol
Access to Level-3 NEXRAD WSR-88D Dual-Polarization (Dual-Pol) radar data — processed products derived from the nation’s network of advanced weather radars. Dual-Pol technology transmits and receives radar pulses in both horizontal and vertical orientations, enabling more accurate identification of precipitation type, intensity, and structure. These datasets are widely used in weather forecasting, hydrology, aviation, and severe storm analysis to better understand and monitor atmospheric conditions.
Numerical Models
This webpage provides access to numerical weather prediction (NWP) model data from leading forecast centers including NCEP, ECMWF, and ECCC. These models use mathematical simulations of the atmosphere to predict future weather conditions and are available in both deterministic and ensemble formats, offering a range of possible outcomes to better represent forecast uncertainty. To support analysis, the page also features forecast comparison tools and model soundings, allowing users to explore differences between models and gain deeper insights into atmospheric structure and model performance.
Text & Outlooks
Explore a wide range of text and graphical outlooks that deliver forecasts, detailed analyses, and interactive maps of active weather hazards. Products are sourced from multiple NOAA agencies—including the NWS, SPC, NHC, CPC, RFC, OPC, and WPC—offering a comprehensive view of current and developing weather threats. Access to recently expired products are also available to track how forecasts and hazard assessments have evolved over time, providing valuable context for understanding impactful weather events.
Keep Weather Data Free
Your support powers open tools, reliable hosting, and ongoing innovation for millions of users.
NexLab Weather is community-supported. Donations sustain our infrastructure, compensate our small development team, and accelerate new features — while keeping data and tools freely available.