Pollen Level
Loading
Fetching live data
Loading city data
Current Conditions
Air Quality
Loading
Fetching live data
Weather
Loading
Fetching live data
Checking today's conditions
Gathering pollen, air quality, and weather data for you.
Loading city data
Pollen Level
Loading
Fetching live data
Air Quality
Loading
Fetching live data
Weather
Loading
Fetching live data
Gathering pollen, air quality, and weather data for you.
Gathering pollen, air quality, and weather data for you.
Pollen Level
Loading
Fetching live data
Air Quality
Loading
Fetching live data
Weather
Loading
Fetching live data
Round Lake's allergy season is compressed but intense, running from April through October. The flat, agricultural landscape around Round Lake, IL produces significant grass and ragweed pollen during peak months.
Right now: August kicks off ragweed season in Round Lake. The Midwest is the US ragweed belt — counts can be extreme.
Spring
Apr – May
Tree pollen season is short but intense — oak, elm, and ash dominate.
Summer
May – Jul
Grass pollen peaks in June. Agricultural regions see elevated counts.
Fall
Aug – Oct
Ragweed is the dominant allergen. The Midwest is a major ragweed zone.
The flat terrain near Round Lake allows pollen to travel long distances on the wind. Cold fronts can temporarily drop counts, but warm spells bring rapid pollen surges. PollenTracker monitors these daily shifts.
Open another nearby forecast without going back to the map.
Google UPI 0/5
Weather
84°F
Sunny · 42% humidity · 4 mph wind
CAUTION
Ragweed pollen risk is high (Google UPI 2/5 (Low)), but winds are light and air quality is decent. Take precautions — the safest hours are later in the day.
Pollen: Ragweed pollen risk is high today; source reading: Google UPI 2/5 (Low).
Lower-risk hours: 19:00-21:00
Hourly pollen risk is estimated from weather trends when no live hourly pollen feed is available.
Informational only. Not medical advice. For health concerns, please consult a qualified healthcare provider. Editorial standards.