Air Quality Alert AIR QUALITY ALERT - Adams County

Current Radar
Thornton, Colorado current radar
Click for larger view
Current Webcam
Thornton, Colorado current webcam image
Click for larger view
Latest News
powered by Surfing Waves
spacer
METRIC | IMPERIAL
Updated: 11-Aug-2026 @ 12:40am   (0 sec ago)
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Colder 0.9°F than last hour.

73.8°F

Feels like:  77°F
24-hr diff: 0.8°FWarmer 0.8°F than yesterday at this time.
Comfortable
High Today
74.3°F
12:05 AM
Low Today
72.6°F
12:32 AM
Yest High
94.8°F
2:42 PM
Yest Low
64.7°F
6:58 AM
Sta* High
98.0°F
2022
Sta* Low
51.2°F
2017
* This Station's Records Since 11/2006
Night time, Dry, A few clouds Night time, Dry, A few clouds

Wind from W Wind:  W
2.9

Gusting to:
5.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
34.7 of 100
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy
Tuesday

Tuesday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms
Tuesday
Night
Tuesday Night: Partly Cloudy
Partly Cloudy
Lo 66°F Hi 97°F Lo 65°F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 0.8°F since last hour. 48.0°F
Last Hour: Decreased 0.8°F since last hour. -0.8°F
High 12:07 AM: 51.0°F
Low 12:39 AM: 48.0°F
Record High: 73.2°F on
3-Aug-2007
Record Low: -17.3°F on
16-Jan-2024
Wetbulb: 59.8°F
Rain Today
rain graph

Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.00 in
Aug Rain: 0.00 in
Aug to Date
  Avg:10
0.53 in
Aug to Date
  Diff from Avg:10
Under 0.53 in for the month 0.53 in
Aug Avg: 1.06 in
Diff from Avg: Under 1.06 in for the month 1.06 in
Season:1 5.49 in
YTD
  Avg:11
10.36 in
YTD
  Diff from Avg:11
Under 4.87 in for the year 4.87 in
Last Rain
Time/Date:
30-Jul-2026
at 4:15 PM
41 rain days in 2026
0 days in August
11 days since last rain
Current: W  2.9 mph
1Hr Average: 2.3 mph
Wind Run: 1.50 miles
Wind Gust
Current: 5.0 mph
Today: 6.0 mph 12:01 AM
Month: 31.0 mph 8-Aug
Year: 43.0 mph 25-Feb
Record Gust: 62.1 mph
17-Apr-2018
Sunlight:
13 h 55 m 52 s
of Sunlight Yesterday
13 h 53 m 39 s
of Sunlight Today
Which is
2 min 13 sec shorter than
yesterday
13 h 51 m 25 s
of Sunlight Tomorrow
(Noon) graph (Midnight)
Legend

Waning Crescent
Waning Crescent, 27 days, 21 hours, 0 minutes in cycle
3%
Illuminated
Humidity Barometer
Current: No Change 40%
Last Hour: No Change 0%
High 12:15 AM: 45%
Low 12:39 AM: 40%
Record High: 100%
12-Feb-2007
Record Low: 0%
1-Jan-2008
Current: Rising 0.001  inHg/hr 29.539 inHg
Last Hour: Steady
High 12:05 AM: 29.550
Low 12:24 AM: 29.539
Record High: 31.086 inHg
30-Dec-2014
Record Low: 25.130 inHg
17-Dec-2006
Cooling Degree Days Snow3 Heat Index Air
Today: 0.2
Aug: 119.9
2026 to Date: 792.6
Heating Degree Days
2026 to Date: 2416.8
Today: 0.00 in
Yesterday: 0.00 in
Aug Snow: No Change 0.00 in
Aug Avg: 0.00 in
Diff from Avg: 0.00 in
Season Total:2 0.00 in
Snow Depth: 0.00 in
0 snow days in August
0 snow days this season.2
First Snow of Season:
8-Jan-2026
Average 1st Snow:
29 of Oct
Current: 77.2°F
High 12:05am: 74.3°F
Yesterday: 91.7°F
Record: 103.5°F
26-Jul-2026
Quality
Index6:

80


Moderate
Density:
1.17 kg/m3
UV Summary/Forecast Solar Summary
High Yest:   7.0 @ 12:21 PM
Aug-11

9.7
Aug-12

9.7
Aug-13

9.7
High Yest:   1055.0 @ 12:17 PM
Sun Hours Today:
00:00
   This Month: 78:14 Hrs
Rise: 6:07 am  Set: 8:02 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Night
YTD Avg Temp: 57.5°F
Sunrise: 6:07 am
Sunset: 8:02 pm
Moonrise: 4:34 am
Moonset: 6:53 pm
Full Moon: 29-Jul-2026
New Moon: 17:37 UTC
12-Aug-2026
Updated at Midnight
Current ET: 0.07 in
7-Days Rain: 0.00 in
7-Days ET: 1.61 in
7-Day:  1.614 in water in deficit of what evaporated in last 7 days. 1.614 in
August:  2.59 in water in deficit of what evaporated this month. 2.59 in
Support this Site!
Your donation helps support this site
HIGHS: LOWS:
104.4°F
25-Jul-2026
-14.6°F
2-Feb-2011
Daytime Records
  100.6°F°F
12-Jul-2024
  -8.1°F°F
22-Dec-2022
Nitetime Records
  88.0°F°F
15-Aug-2012
  -10.7°F°F
02-Feb-2011
ICN:1 | S3C2:1 | Ajax 3.xx
ISS:Ok | CON:4.7 | RCP:100%
1 Rain season: Jan 1st to Dec 31st.   2 Snow season July 1st to June 30th.   3 Snow manually measured usually around 5AM and 5PM.   5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present).   6 Air Quality Index is provided by Colorado Department of Public Health & Environment.   10 Historical average only to day 11 of just the month of August for this station since 2006.   11 Historical average rain this season to day 11 of August for this station since 2006.
 NWS Weather Forecast  -   Outlook Tonight & Tuesday
Tonight

Tonight: Mostly Cloudy
Mostly Cloudy

Lo 66°F
NWS forecast: Mostly cloudy. Low around 66, with temperatures rising to around 68 overnight. West wind around 6 mph.
Tuesday

Tuesday: Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny then Slight Chance Showers And T-Storms

Hi 97°F
NWS forecast: A slight chance of showers and thunderstorms after 3pm. Mostly sunny. High near 97, with temperatures falling to around 94 in the afternoon. Northwest wind 3 to 9 mph. Chance of precipitation is 20%.
 NWS Short Term Weather Forecast
Tuesday
Night
Tuesday Night: Partly Cloudy
Partly Cloudy
Wednesday

Wednesday: Mostly Sunny then Showers And Thunderstorms Likely
Mostly Sunny then Showers And T-Storms Likely
Wednesday
Night
Wednesday Night: Showers And Thunderstorms Likely then Mostly Cloudy
Showers And T-Storms Likely then Mostly Cloudy
Thursday

Thursday: Partly Sunny then Showers And Thunderstorms
Partly Sunny then Showers And T-Storms
Thursday
Night
Thursday Night: Showers And Thunderstorms
Showers And T-Storms
Friday

Friday: Mostly Cloudy then Showers And Thunderstorms Likely
Mostly Cloudy then Showers And T-Storms Likely
Friday
Night
Friday Night: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Lo 65°F Hi 93°F Lo 61°F Hi 81°F Lo 57°F Hi 82°F Lo 56°F
Click here for the complete forecast.
ajax-dashboard6.php - Version 6.95h - 20-Feb-2023 - Script by: Scott of BurnsvilleWeatherLIVE.com
Now supported by Saratoga-weather.org Download