Colorado Weather & Safety Alerts
9 active alerts ยท Updated July 17, 2026
Data source: National Weather Service (NWS) Last verified: July 17, 2026
Air Quality
Air Quality Alert (ADVISORY) - expires July 17, 2026 at 11:00 AM EDT
Areas affected: San Juan, CO; Montrose, CO; Hinsdale, CO; San Miguel, CO; Ouray, CO
Air Quality Alert issued July 16 at 10:10PM MDT by NWS Grand Junction CO
The Colorado Department of Public Health and Environment has issued the following...
WHAT...Air Quality Health Advisory for Wildfire Smoke.
WHERE...Ouray, San Juan, Hinsdale, and eastern Montrose and San Miguel Counties. Locations include, but are not limited to Ouray, Silverton, Lake City, Montrose, and Telluride.
WHEN...900 AM Thursday July 16 to 900 AM Friday July 17
IMPACTS...Moderate to heavy smoke from the Gold Mountain Fire and Elk Fire is possible throughout the advisory area through at least Friday morning.
HEALTH INFORMATION...Public Health Recommendations: If smoke is thick or becomes thick in your neighborhood you may want to remain indoors. This is especially true for those with heart disease, respiratory illnesses, the very young, and older adults. Consider limiting outdoor activity when moderate to heavy smoke is present. Consider relocating temporarily if smoke is present indoors and is making you ill. If visibility is less than 5 miles in smoke in your neighborhood, smoke has reached levels that are unhealthy.
Source: NWS Grand Junction CO
Air Quality Alert (ADVISORY) - expires July 17, 2026 at 6:00 PM EDT
Areas affected: Arapahoe, CO; Boulder, CO; Adams, CO; Broomfield, CO; Weld, CO; Denver, CO; Douglas, CO; Larimer, CO; Jefferson, CO
Air Quality Alert issued July 16 at 10:10PM MDT by NWS Denver CO
The Colorado Department of Public Health and Environment has issued the following...
WHAT...Ozone Action Day Alert.
WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties
WHEN...400 PM Thursday July 16 to 400 PM Friday July 17
IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Ozone will be in the Moderate to Unhealthy for Sensitive Groups range on Thursday and Friday throughout the northern Colorado Front Range. The highest concentrations are most likely in the western portions of the Denver Metro area from Golden northward through Boulder; including the lower foothills. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Friday, July 17, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone- pollution-and-your-health
HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
Source: NWS Denver CO
Air Quality Alert (ADVISORY) - expires July 17, 2026 at 11:00 AM EDT
Areas affected: Pueblo, CO
Air Quality Alert issued July 16 at 10:10PM MDT by NWS Pueblo CO
The Colorado Department of Public Health and Environment has issued the following...
WHAT...Air Quality Health Advisory for Wildfire Smoke.
WHERE...southwestern Pueblo County. Locations include, but are not limited to Beulah, Rye, and Colorado City.
WHEN...900 AM Thursday July 16 to 900 AM Friday July 17
IMPACTS...Moderate to heavy smoke from the Aspen Acres Fire is possible in southwestern Pueblo County until at least Friday morning. Heavy smoke is most likely during the morning hours.
HEALTH INFORMATION...Public Health Recommendations: If smoke is thick or becomes thick in your neighborhood you may want to remain indoors. This is especially true for those with heart disease, respiratory illnesses, the very young, and older adults. Consider limiting outdoor activity when moderate to heavy smoke is present. Consider relocating temporarily if smoke is present indoors and is making you ill. If visibility is less than 5 miles in smoke in your neighborhood, smoke has reached levels that are unhealthy.
Source: NWS Pueblo CO
Air Quality Alert (ADVISORY) - expires July 17, 2026 at 11:00 AM EDT
Areas affected: Pueblo, CO
Air Quality Alert issued July 16 at 4:10PM MDT by NWS Pueblo CO
The Colorado Department of Public Health and Environment has issued the following...
WHAT...Air Quality Health Advisory for Wildfire Smoke.
WHERE...southwestern Pueblo County. Locations include, but are not limited to Beulah, Rye, and Colorado City.
WHEN...900 AM Thursday July 16 to 900 AM Friday July 17
IMPACTS...Moderate to heavy smoke from the Aspen Acres Fire is possible in southwestern Pueblo County until at least Friday morning. Heavy smoke is most likely during the morning hours.
HEALTH INFORMATION...Public Health Recommendations: If smoke is thick or becomes thick in your neighborhood you may want to remain indoors. This is especially true for those with heart disease, respiratory illnesses, the very young, and older adults. Consider limiting outdoor activity when moderate to heavy smoke is present. Consider relocating temporarily if smoke is present indoors and is making you ill. If visibility is less than 5 miles in smoke in your neighborhood, smoke has reached levels that are unhealthy.
Source: NWS Pueblo CO
Air Quality Alert (ADVISORY) - expires July 17, 2026 at 6:00 PM EDT
Areas affected: Broomfield, CO; Douglas, CO; Adams, CO; Weld, CO; Arapahoe, CO; Jefferson, CO; Denver, CO; Larimer, CO; Boulder, CO
Air Quality Alert issued July 16 at 4:10PM MDT by NWS Denver CO
The Colorado Department of Public Health and Environment has issued the following...
WHAT...Ozone Action Day Alert.
WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties
WHEN...400 PM Thursday July 16 to 400 PM Friday July 17
IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Ozone will be in the Moderate to Unhealthy for Sensitive Groups range on Thursday and Friday throughout the northern Colorado Front Range. The highest concentrations are most likely in the western portions of the Denver Metro area from Golden northward through Boulder; including the lower foothills. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Friday, July 17, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone- pollution-and-your-health
HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
Source: NWS Denver CO
Air Quality Alert (ADVISORY) - expires July 17, 2026 at 11:00 AM EDT
Areas affected: Ouray, CO; Hinsdale, CO; San Juan, CO; San Miguel, CO; Montrose, CO
Air Quality Alert issued July 16 at 4:10PM MDT by NWS Grand Junction CO
The Colorado Department of Public Health and Environment has issued the following...
WHAT...Air Quality Health Advisory for Wildfire Smoke.
WHERE...Ouray, San Juan, Hinsdale, and eastern Montrose and San Miguel Counties. Locations include, but are not limited to Ouray, Silverton, Lake City, Montrose, and Telluride.
WHEN...900 AM Thursday July 16 to 900 AM Friday July 17
IMPACTS...Moderate to heavy smoke from the Gold Mountain Fire and Elk Fire is possible throughout the advisory area through at least Friday morning.
HEALTH INFORMATION...Public Health Recommendations: If smoke is thick or becomes thick in your neighborhood you may want to remain indoors. This is especially true for those with heart disease, respiratory illnesses, the very young, and older adults. Consider limiting outdoor activity when moderate to heavy smoke is present. Consider relocating temporarily if smoke is present indoors and is making you ill. If visibility is less than 5 miles in smoke in your neighborhood, smoke has reached levels that are unhealthy.
Source: NWS Grand Junction CO
Air Quality Alert (ADVISORY) - expires July 17, 2026 at 11:00 AM EDT
Areas affected: La Plata, CO; Archuleta, CO
Air Quality Alert issued July 16 at 4:10PM MDT by NWS Grand Junction CO
The Colorado Department of Public Health and Environment has issued the following...
WHAT...Air Quality Health Advisory for Ozone.
WHERE...Archuleta and La Plata Counties. Locations include, but are not limited to Pagosa Springs, Durango, Hermosa, Honeyville, Rockwood, and the Southern Ute Reservation.
WHEN...300 PM Thursday July 16 to 1000 PM Thursday July 16
IMPACTS...Ozone concentrations in the Unhealthy for Sensitive Groups category are likely within the advisory area Thursday afternoon and evening.
HEALTH INFORMATION...Public Health Recommendations: Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
Source: NWS Grand Junction CO
Air Quality Alert (ADVISORY) - expires July 17, 2026 at 11:00 AM EDT
Areas affected: Pueblo, CO
Air Quality Alert issued July 16 at 9:10AM MDT by NWS Pueblo CO
The Colorado Department of Public Health and Environment has issued the following...
WHAT...Air Quality Health Advisory for Wildfire Smoke.
WHERE...southwestern Pueblo County. Locations include, but are not limited to Beulah, Rye, and Colorado City.
WHEN...900 AM Thursday July 16 to 900 AM Friday July 17
IMPACTS...Moderate to heavy smoke from the Aspen Acres Fire is possible in southwestern Pueblo County until at least Friday morning. Heavy smoke is most likely during the morning hours.
HEALTH INFORMATION...Public Health Recommendations: If smoke is thick or becomes thick in your neighborhood you may want to remain indoors. This is especially true for those with heart disease, respiratory illnesses, the very young, and older adults. Consider limiting outdoor activity when moderate to heavy smoke is present. Consider relocating temporarily if smoke is present indoors and is making you ill. If visibility is less than 5 miles in smoke in your neighborhood, smoke has reached levels that are unhealthy.
Source: NWS Pueblo CO
Air Quality Alert (ADVISORY) - expires July 17, 2026 at 11:00 AM EDT
Areas affected: Montrose, CO; San Miguel, CO; Ouray, CO; San Juan, CO; Hinsdale, CO
Air Quality Alert issued July 16 at 9:10AM MDT by NWS Grand Junction CO
The Colorado Department of Public Health and Environment has issued the following...
WHAT...Air Quality Health Advisory for Wildfire Smoke.
WHERE...Ouray, San Juan, Hinsdale, and eastern Montrose and San Miguel Counties. Locations include, but are not limited to Ouray, Silverton, Lake City, Montrose, and Telluride.
WHEN...900 AM Thursday July 16 to 900 AM Friday July 17
IMPACTS...Moderate to heavy smoke from the Gold Mountain Fire and Elk Fire is possible throughout the advisory area through at least Friday morning.
HEALTH INFORMATION...Public Health Recommendations: If smoke is thick or becomes thick in your neighborhood you may want to remain indoors. This is especially true for those with heart disease, respiratory illnesses, the very young, and older adults. Consider limiting outdoor activity when moderate to heavy smoke is present. Consider relocating temporarily if smoke is present indoors and is making you ill. If visibility is less than 5 miles in smoke in your neighborhood, smoke has reached levels that are unhealthy.
Source: NWS Grand Junction CO
Source
Alert data provided by the National Weather Service (NWS). This page shows active alerts only and is refreshed daily. For real-time updates, visit weather.gov.