Bug Bite Forecast: Colorado — Week of June 29, 2026

Expect gnats near the Yampa River, especially during evening strolls along the riverside trails. Mosquito activity remains subdued due to the lower humidity

Midges may be present near the Eagle River, particularly for those enjoying an afternoon walk or golf course activities. Overall mosquito risk is kept in check by the dry air

Gnats and midges are likely near the confluence of the Colorado and Roaring Fork Rivers, especially if you’re relaxing by the hot springs or walking the promenade. Enjoy the canyon views with minimal buzzing

Look out for midges near the Colorado River, particularly if you’re fishing or recreating near the water’s edge. The clear skies and moderate temperature could also bring out some biting flies in open, sunny areas

Gnats will be active along the Yampa River, especially for anglers or those exploring the riverbanks. Mosquitoes are less of a concern with the current humidity

Limited insect activity is expected, though a few gnats might appear near the Eagle River during evening hours. The drier climate and clear skies keep most biting insects at bay

Gnats and midges could be present near the Eagle River and along shaded sections of local trails. Mountain bikers and hikers should be aware, though mosquito numbers are low

Midges may emerge near Nottingham Lake and the Eagle River, particularly during late afternoon resort activities. Enjoy the crisp air with only minor insect presence

Expect gnats near the Big Thompson River and smaller creeks, especially if you’re hiking into Rocky Mountain National Park. Biting flies might be seen on sunny, exposed trails

Gnats are possible near Gore Creek, especially during leisurely village strolls or streamside activities. The alpine environment and current conditions keep mosquito populations low

Midges may be found near the Blue River and surrounding wetlands, particularly for those enjoying an evening by the water. Cooler temperatures at this elevation help mitigate widespread insect issues

Gnats and midges are probable near the Colorado River, especially for anyone recreating along the riverbanks. Mosquitoes are less active given the current humidity

Expect midges near the Colorado River, particularly if you’re enjoying the riverfront trails or views from the mesa. Some biting flies could be present in sunny, open areas

Gnats and midges are likely near the Blue River

Clear skies and mild temperatures mean a moderate risk of gnat encounters, especially near urban greenways and during evening walks in local parks

Enjoy the pleasant weather, but expect a moderate risk of stable fly bites near Cherry Creek State Park and around irrigated areas

With the sunny conditions, there’s a moderate risk of deer fly activity along the Poudre River trails and during afternoon hikes near Horsetooth Reservoir

The clear skies invite outdoor recreation

The dry air keeps most biting insects at bay, but a few gnats might annoy those enjoying backyard patios or evening walks in local parks

Despite the dry air, proximity to the South Platte River and irrigated fields means mosquitoes and some biting flies could be active, especially near dawn or dusk

With clear skies and low humidity over the plains, bug activity is minimal; only stray biting flies might be encountered during outdoor chores

Near the South

With clear skies over the eastern plains, mosquitoes could be present near irrigation ditches or stagnant areas as evening approaches. Be mindful of stable flies if you’re working outdoors near livestock or in taller grasses

Mosquitoes and gnats may be active near the Colorado River and irrigation ditches, especially as evening approaches. Enjoy outdoor patios but consider light repellent

With clear skies and comfortable temperatures, expect some activity from small biting gnats around irrigated areas. Daytime activity should be pleasant, but dusk may bring out more insects

Biting flies and mosquitoes could be present near the Uncompahgre River and agricultural fields. Those enjoying evening strolls should be mindful of insect activity

Expect moderate tick activity on hiking trails around Cheyenne Mountain, with very low mosquito presence due to the dry air. Enjoy outdoor activities with standard precautions for brushy areas

While the Arkansas River provides some moisture, the low humidity will keep mosquito numbers down; however, watch for dry-adapted gnats near the riverbanks and ticks in grassy park areas

With extremely low humidity, mosquito activity is negligible; focus instead on minor nuisance gnats near irrigated landscapes and