Crosby, Texas

This is the highest “feels like” expected for the rest of today — the peak, not an average. It's the heat index or wind chill: what the air feels like to your body once humidity or wind is factored in, computed with the National Weather Service's own formulas. Phone weather apps often use their own gentler “feels like” formulas, so theirs can read several degrees cooler than the NWS heat index on humid days.

This is the humidity right now — how much moisture the air holds relative to its maximum. High humidity slows the evaporation of sweat, so hot days feel hotter.

This is the dew point right now — the temperature the air would have to cool to for dew to form. Above about 70° feels muggy; below about 55° feels dry.

This is the highest UV index expected today — the EPA's forecast of peak sunburn-causing UV radiation, on a scale where 3–5 is moderate, 6–7 high, 8–10 very high, and 11+ extreme. At 6 or above, use sunscreen and seek shade around midday — Gulf Coast summers routinely reach very high.

This is the air quality right now, on the U.S. AQI's standard 0–500 scale: 0–50 good, 51–100 moderate, 101–150 unhealthy for sensitive groups, 151+ unhealthy for everyone. Unlike every other number here, this one is modeled — there's no EPA air monitor in Crosby, so it comes from Open-Meteo's forecast rather than a nearby instrument, and it's a useful estimate (helpful during wildfire-smoke days) rather than an official reading.