Should I go outside today?
Get a clear YES or NO answer based on pollen levels, air quality, and weather in your city. No data overload — just actionable decisions.
Regional Pollen Snapshot
Representative pollen risk across major US & UK cities
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Explore 200+ pollen forecast pages in one place
Compare today's pollen risk, AQI, and temperature across US and UK cities, then jump into the city forecast you care about.
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Pollen & Allergy FAQ
What is pollen count and why does it matter?
Pollen count measures the number of pollen grains per cubic meter of air. Higher counts trigger allergy symptoms like sneezing, congestion, and itchy eyes. PollenTracker monitors pollen counts across 200+ cities in the US and UK so you know when it's safe to go outside.
When is pollen season in the US?
Tree pollen peaks from March to May, grass pollen from May to July, and ragweed from August to October. The exact timing varies by region — Southern states start earlier, while Northern states have a compressed but intense season.
How does PollenTracker decide if it's safe to go outside?
We combine real-time pollen levels, air quality index (AQI), and weather conditions into a single score. Based on this score, you get a clear YES (safe), CAUTION (take precautions), or NO (stay inside) recommendation.
What's the difference between pollen count and air quality index?
Pollen count measures allergen particles from plants, primarily affecting allergy sufferers. The Air Quality Index (AQI) measures pollutants like PM2.5 and ozone that affect everyone's respiratory health. PollenTracker tracks both to give you the full picture.
“I built PollenTracker because my 6-year-old son is severely allergic to pollen. Every morning I needed one simple answer: should we go outside today?”
Check Your City's Pollen Level Now
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