
Dr. Jatinder Aulakh
Hoskinson Health & Wellness Clinic
Check today's pollen count by city in Wyoming. Explore local allergy forecasts, monitor common seasonal allergens, and use city-level trends to plan around high pollen days.
Allergy Ava organizes statewide and local pollen information so you can compare conditions, anticipate seasonal flare-ups, and find relevant allergy forecast pages faster.
Pollen levels in Wyoming can vary by city, weather, vegetation, and season. Choose a local forecast below to see the current allergy index, main allergen, and 5-day outlook for cities including Cheyenne, Casper, Gillette, Laramie, Rock Springs, Sheridan.
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Local allergy care
Use today's pollen forecast alongside nearby allergy and immunology profiles when symptoms need clinical follow-up, testing, or long-term treatment planning.

Hoskinson Health & Wellness Clinic
Wyoming allergy sufferers can use this page to monitor pollen trends and find relevant city forecasts when available. Pollen levels vary by season, with tree pollen often peaking in spring, grass pollen becoming more active in late spring and summer, and weed pollen, especially ragweed, remaining a concern in late summer and fall.
Use Allergy Ava's city-level forecasts to plan outdoor activities, manage medication timing, and stay informed about the allergens most prevalent in your area. Our data is updated regularly to give you the most accurate picture of current conditions.
Wyoming’s open terrain lets wind move pollen, dust, grass fragments, sagebrush pollen, and dry plant debris over long distances. Even a moderate pollen day can feel harsher when gusts keep particles airborne.
They are close, but elevation, temperature, wind direction, foothill exposure, and local landscaping can change bloom timing. Laramie’s higher elevation may delay some spring activity, while Cheyenne can feel more high-plains and urban-tree influenced.
Yes. Sagebrush is widespread across Wyoming and can become a major late-summer and fall weed-pollen trigger, especially in dry basins, rangeland, roadsides, and high-desert areas. It is different from culinary sage.
Rock Springs, Green River, and Evanston are more high-desert and sagebrush-basin influenced, with strong wind, dust, and dryland weeds. Casper has more North Platte corridor and foothill influence, while Sheridan is closer to Bighorn foothill vegetation.
Today's statewide signal
Wyoming allergy conditions can change quickly because elevation, dry wind, sagebrush steppe, river corridors, foothill vegetation, and high-desert dust vary sharply across the state. Compare Cheyenne, Casper, Gillette, Laramie, Rock Springs, Sheridan, Evanston, and Green River for local pollen levels, dominant allergens, weather context, and short-term trend signals.
Data updates regularly to reflect current conditions across Wyoming cities.
Highest city index now
Cheyenne
Ragweed · High
4
Live city comparison
Sort Wyoming cities by pollen index, temperature, or trend. Select a city for its full local forecast.
| Main allergen | Weather context | ||||
|---|---|---|---|---|---|
| Cheyenne | 4High | Ragweed | Stable Tomorrow looks similar, near high conditions. | 62°F | Clear Watch ragweed levels and limit long outdoor exposure during peak hours. |
| Casper | 4High | Ragweed | Stable Tomorrow looks similar, near high conditions. | 64°F | Mostly cloudy Watch ragweed levels and limit long outdoor exposure during peak hours. |
| Laramie | 4High | Ragweed | Stable Tomorrow looks similar, near high conditions. | 56°F | Clear with periodic clouds Watch ragweed levels and limit long outdoor exposure during peak hours. |
| Sheridan | 4High | Ragweed | Stable Tomorrow looks similar, near high conditions. | 63°F | Cloudy Watch ragweed levels and limit long outdoor exposure during peak hours. |
| Evanston | 4High | Ragweed | Stable Tomorrow looks similar, near high conditions. | 62°F | Partly cloudy Watch ragweed levels and limit long outdoor exposure during peak hours. |
| Gillette | 3Moderate | Ragweed | Rising Forecast moves toward high conditions tomorrow. | 64°F | Cloudy Watch ragweed levels and limit long outdoor exposure during peak hours. |
| Rock Springs | 3Moderate | Ragweed | Stable Tomorrow looks similar, near moderate conditions. | 64°F | Partly cloudy Watch ragweed levels and limit long outdoor exposure during peak hours. |
| Green River | 0None | None | Stable Tomorrow looks similar, near none conditions. | 65°F | Partly cloudy Outdoor pollen exposure looks limited for most people today. |
Ragweed is the main allergen
Pollen index
4
Trend
Stable
Watch ragweed levels and limit long outdoor exposure during peak hours.
Ragweed is the main allergen
Pollen index
4
Trend
Stable
Watch ragweed levels and limit long outdoor exposure during peak hours.
Ragweed is the main allergen
Pollen index
4
Trend
Stable
Watch ragweed levels and limit long outdoor exposure during peak hours.
Ragweed is the main allergen
Pollen index
4
Trend
Stable
Watch ragweed levels and limit long outdoor exposure during peak hours.
Ragweed is the main allergen
Pollen index
4
Trend
Stable
Watch ragweed levels and limit long outdoor exposure during peak hours.
Ragweed is the main allergen
Pollen index
3
Trend
Rising
Watch ragweed levels and limit long outdoor exposure during peak hours.
Ragweed is the main allergen
Pollen index
3
Trend
Stable
Watch ragweed levels and limit long outdoor exposure during peak hours.
None is the main allergen
Pollen index
0
Trend
Stable
Outdoor pollen exposure looks limited for most people today.
Regional allergy forecast
Southeast Wyoming sits in a windy high-plains and foothill transition zone where spring trees, irrigated lawns, grasses, sagebrush, and dry roadside weeds can shift quickly after fronts move through.
Casper’s allergy pattern is shaped by North Platte River cottonwoods, Casper Mountain foothill air, sagebrush steppe, open grassland, and strong wind that can lift pollen, dust, and plant debris.
Northeast Wyoming blends Powder River Basin grassland, Bighorn foothill influence, shelterbelt trees, dry rangeland, and late-season weeds. Sheridan can feel more foothill-influenced, while Gillette is more open-plains and wind-exposed.
Southwest Wyoming has a dry, high-desert pattern with Green River corridors, sagebrush basins, grassland, dust, and strong I-80 wind exposure. Weed pollen can feel especially irritating during dry late-summer gusts.
State-specific pollen calendar
March to June
Box elder, maple, ash, willow, cottonwood, poplar, aspen, birch, juniper, and cedar-type pollen can drive spring symptoms. Lower basins and warmer corridors may start earlier, while higher-elevation communities can lag into late spring.
May to July
Bluegrass, timothy, fescue, bentgrass, orchard grass, ryegrass, lawns, parks, hay fields, rangeland, and roadside grasses can raise summer exposure, especially during warm, dry, windy stretches.
August to October
Sagebrush, ragweed, wormwood, orache, amaranth, kochia, Russian thistle, and other dryland weeds can drive late-season symptoms around disturbed soil, roadsides, basins, rangeland, and open high-desert areas.
November to February
Hard freezes and snow cover usually reduce outdoor pollen, but dry indoor air, dust, pet dander, wood smoke, winter inversions, and windblown dust can still irritate sensitive residents.
Weather-pollen correlation
Wind can disperse pollen, rain can temporarily wash particles down, and humidity can increase mold irritation. The city table combines pollen and weather signals so users can compare outdoor risk without opening every city page.