Loomis, CA Pollen Calendar
Here is the month-by-month allergy season for Loomis, CA, based on California's seasonal pollen pattern. Right now, in July, Grass is usually the allergen to watch. The worst month is typically March, and the calmest is July. For the exact numbers today, check your live reading below.
Today in Loomis
Tuesday, July 28, 2026
The Loomis Pollen Calendar, Month by Month
Each month is rated from Low to Very High, with the allergen that usually drives it. The current month is outlined.
What's Active in July
These allergens are usually in the air around Loomis this month:
The Worst and Best Months in Loomis
Loomis's pollen usually peaks in March, driven by Olive. If your allergies flare on the same weeks every year, that is usually why. The calmest month is typically July.
California has a long mild season, with olive and oak in spring, grass into early summer, and lighter weed pollen in the fall.
A pollen calendar shows the usual pattern, but weather shifts it. A warm winter pulls tree season earlier, and a late frost stretches ragweed into November. Start any allergy medication a week or two before your worst month, and check the daily count to catch the spikes. If symptoms hit hard every season, an allergist in California can help with testing and longer-term options like allergy shots.
Keep Track of Pollen in Loomis
The calendar tells you what to expect. Your daily report tells you what's actually happening:
- Loomis pollen count today — live tree, grass, and weed levels with a 5-day forecast.
- Loomis air quality — today's AQI and the pollutants behind it.
- California pollen season — the statewide calendar and other cities.
- Today's worst pollen cities — see where Loomis ranks right now.
Get Loomis pollen alerts
We send a free email whenever pollen is High or Very High in Loomis. No spam, no daily emails when pollen is low. Just a heads-up on the days that matter.
Sign up for free alertsSeasonal pattern based on California pollen data. Today's reading updated daily. MyPollenPal