Castle Rock, CO

Elev. 6218 | 9:00 AM MDT

0" over next 8 days

ACTION DAY FOR MULTIPLE POLLUTANTS FROM 400 PM THURSDAY UNTIL 400 PM FRIDAY

The Colorado Department of Public Health and Environment has issued the following...

WHAT...Action Day for Multiple Pollutants.

WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties

WHEN...400 PM Thursday August 06 to 400 PM Friday August 07

IMPACTS...Action Day for Multiple Pollutants is now in effect for the Front Range Urban Corridor. Ozone is expected to be in the Moderate to Unhealthy for Sensitive Groups range on Thursday and Friday. The highest concentrations of ozone are most likely in the southern and western portions of the Denver Metro area. Fine particulate concentrations are expected to be in the Moderate to Unhealthy for Sensitive Groups range on Thursday and Friday. 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, August 7, 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. close
ACTION DAY FOR MULTIPLE POLLUTANTS FROM 400 PM THURSDAY UNTIL 400 PM FRIDAY

The Colorado Department of Public Health and Environment has issued the following...

WHAT...Action Day for Multiple Pollutants.

WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties

WHEN...400 PM Thursday August 06 to 400 PM Friday August 07

IMPACTS...Action Day for Multiple Pollutants is now in effect for the Front Range Urban Corridor. Ozone is expected to be in the Moderate to Unhealthy for Sensitive Groups range on Thursday and Friday. The highest concentrations of ozone are most likely in the southern and western portions of the Denver Metro area. Fine particulate concentrations are expected to be in the Moderate to Unhealthy for Sensitive Groups range on Thursday and Friday. 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, August 7, 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. close
ACTION DAY FOR MULTIPLE POLLUTANTS FROM 400 PM THURSDAY UNTIL 400 PM FRIDAY

The Colorado Department of Public Health and Environment has issued the following...

WHAT...Action Day for Multiple Pollutants.

WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties

WHEN...400 PM Thursday August 06 to 400 PM Friday August 07

IMPACTS...Action Day for Multiple Pollutants is now in effect for the Front Range Urban Corridor. Ozone is expected to be in the Moderate to Unhealthy for Sensitive Groups range on Thursday and Friday. The highest concentrations of ozone are most likely in the southern and western portions of the Denver Metro area. Fine particulate concentrations are expected to be in the Moderate to Unhealthy for Sensitive Groups range on Thursday and Friday. 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, August 7, 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. close

Daily Forecast

Today | Fri, Aug 7
96° 61°
0"
Areas Smoke
Tomorrow | Sat, Aug 8
99° 65°
0"
Areas Smoke then Sunny/Clear
Sun, Aug 9
98° 64°
0"
Mostly Sunny
Mon, Aug 10
96° 63°
0"
Chance T-storms
Tue, Aug 11
95° 63°
0"
Chance T-storms
Wed, Aug 12
91° 63°
0"
T-storms Likely
Thu, Aug 13
83° 61°
0"
T-storms Likely
Fri, Aug 14
82° 57°
0"
T-storms Likely

Past Snowfall

The charts below show past snowfall recorded this year near Castle Rock, CO for the last few years. Tap on a box to see the date. To see more years, scroll to the left. Please send us feedback on this!

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Most Predicted in CO

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