I rarely post in AIS. If you know me, I usually post in AIS+ or another community. But I think this one is useful for a lot more people, because tons of us have allergies. If you suffer like I do, there's a prompt toward the end to build your own. TLDR; No site shows everything in the air in one place. So I had Claude research why, then build the thing. 5 data sources, one page, a 6:30am email every morning, and alerts on bad days. About 2 hours from first question to live URL. Screenshot attached. WHY I WANTED IT - I have allergies. Hay fever, whatever you want to call it. And I don't know WHAT I'm allergic to. - To figure that out I need everything in the air on one screen, broken down by plant, next to how I actually feel that day. I couldn't find it. Claude couldn't find it either. So I built it. - Every air site I tried showed part of the picture. One has AQI. Another has pollen, but lumped into "trees" and "grass." Nobody has mold. Almost nobody has Saharan dust or smoke. - Turns out Fredericksburg has no official air monitor at all. The closest one is San Antonio, 66 miles away. So every local AQI number you've ever seen for here is a model, not a measurement. Most sites don't tell you that. - That's why it has a symptom log. I score each day 0-5 (0 = great, 5 = miserable), and it saves that day's pollen, mold and air levels with the score. After a couple of weeks the pattern table should show which ones line up with my bad days. HOW IT WENT (8:21am to live at 10:24am) 1. Research first. 5 agents fanned out: air quality feeds, pollen, mold, dust and smoke, and a survey of every existing dashboard. Verdict: nothing does all of it. IQAir came closest and still has no plant-level pollen, no mold, no dust. 2. Plan. Data sources, cost per month, what's licensed for personal vs commercial use, and how accurate each number actually is. 3. Build. Claude Code wrote it. I reviewed each piece and made the calls. 4. Ship. Live behind a login only I can pass. Morning email wired about 10 minutes later.