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Current weather in Altona is broken clouds.

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Weather data for Altona is updated regularly with the latest available observations and forecasts.

Now · 1:37 AM

Altona Weather & Hourly Forecast

United States · Colorado · 80302

58°F

Mostly cloudy night

Feels like: 57°F

💧 Humidity 89% 🌡 Pressure 29.77 inHg 💨 Wind 4 mph 👁 Visibility 21.1 mi ☁ Clouds 88% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Altona

Today

2:00 AM

Mostly cloudy night

58° 💧 None 💨 4 mph H 89%29.77 inHg

5:00 AM

Mostly cloudy night

60° 💧 None 💨 6 mph H 65%29.77 inHg

8:00 AM

Mostly cloudy

66° 💧 None 💨 4 mph H 51%29.83 inHg

11:00 AM

Mostly cloudy

78° 💧 0.000 in 💨 5 mph H 35%29.83 inHg

2:00 PM

Light thunderstorms

83° 💧 0.019 in 💨 6 mph H 30%29.80 inHg

5:00 PM

Light rain

81° 💧 0.011 in 💨 3 mph H 32%29.77 inHg

8:00 PM

Mostly clear night

70° 💧 0.000 in 💨 5 mph H 50%29.83 inHg

11:00 PM

Mostly clear night

62° 💧 None 💨 3 mph H 62%29.91 inHg

Tomorrow

2:00 AM

Clear night

58° 💧 None 💨 3 mph H 66%29.94 inHg

5:00 AM

Partly cloudy night

55° 💧 None 💨 1 mph H 71%29.97 inHg

8:00 AM

Mostly sunny

65° 💧 None 💨 2 mph H 54%30.03 inHg

11:00 AM

Partly cloudy

76° 💧 0.027 in 💨 6 mph H 34%30.03 inHg

2:00 PM

Light rain

80° 💧 0.023 in 💨 4 mph H 30%29.94 inHg

5:00 PM

Light rain

74° 💧 0.034 in 💨 5 mph H 45%30.00 inHg

8:00 PM

Light thunderstorms

63° 💧 0.014 in 💨 6 mph H 86%30.03 inHg

11:00 PM

Clear night

57° 💧 None 💨 3 mph H 89%30.06 inHg

Today

2:00 AM

Mostly cloudy night

58° 💧 None 💨 4 mph H 89%29.77 inHg

3:00 AM

Overcast night

58° 💧 None 💨 4 mph H 86%29.77 inHg

4:00 AM

Mostly cloudy night

58° 💧 None 💨 4 mph H 78%29.77 inHg

5:00 AM

Mostly cloudy night

60° 💧 None 💨 6 mph H 65%29.77 inHg

6:00 AM

Mostly cloudy night

59° 💧 None 💨 5 mph H 61%29.77 inHg

7:00 AM

Mostly cloudy

59° 💧 None 💨 4 mph H 59%29.80 inHg

8:00 AM

Mostly cloudy

66° 💧 None 💨 4 mph H 51%29.83 inHg

9:00 AM

Mostly cloudy

75° 💧 None 💨 2 mph H 35%29.83 inHg

10:00 AM

Overcast

77° 💧 None 💨 5 mph H 36%29.83 inHg

11:00 AM

Mostly cloudy

78° 💧 None 💨 5 mph H 35%29.83 inHg

12:00 PM

Mostly cloudy

81° 💧 0.000 in 💨 5 mph H 32%29.83 inHg

1:00 PM

Mostly cloudy

83° 💧 0.000 in 💨 7 mph H 28%29.80 inHg

2:00 PM

Light thunderstorms

83° 💧 0.005 in 💨 6 mph H 30%29.80 inHg

3:00 PM

Light thunderstorms

83° 💧 0.014 in 💨 2 mph H 30%29.77 inHg

4:00 PM

Mostly cloudy

83° 💧 0.000 in 💨 4 mph H 29%29.77 inHg

5:00 PM

Light rain

81° 💧 0.010 in 💨 3 mph H 32%29.77 inHg

6:00 PM

Partly cloudy

80° 💧 0.000 in 💨 7 mph H 32%29.80 inHg

7:00 PM

Partly cloudy

76° 💧 None 💨 6 mph H 39%29.80 inHg

8:00 PM

Mostly clear night

70° 💧 0.000 in 💨 5 mph H 50%29.83 inHg

9:00 PM

Partly cloudy night

66° 💧 None 💨 4 mph H 57%29.88 inHg

10:00 PM

Mostly clear night

63° 💧 None 💨 5 mph H 61%29.88 inHg

11:00 PM

Mostly clear night

62° 💧 None 💨 3 mph H 62%29.91 inHg

Tomorrow

12:00 AM

Mostly clear night

62° 💧 None 💨 3 mph H 59%29.91 inHg

1:00 AM

Mostly clear night

62° 💧 None 💨 2 mph H 60%29.94 inHg

2:00 AM

Clear night

58° 💧 None 💨 3 mph H 66%29.94 inHg

3:00 AM

Mostly clear night

56° 💧 None 💨 3 mph H 68%29.91 inHg

4:00 AM

Mostly clear night

55° 💧 None 💨 3 mph H 71%29.94 inHg

5:00 AM

Partly cloudy night

55° 💧 None 💨 1 mph H 71%29.97 inHg

6:00 AM

Partly cloudy night

56° 💧 None 💨 2 mph H 69%30.00 inHg

7:00 AM

Mostly sunny

57° 💧 None 💨 3 mph H 67%30.00 inHg

8:00 AM

Mostly sunny

65° 💧 None 💨 2 mph H 54%30.03 inHg

9:00 AM

Partly cloudy

71° 💧 None 💨 2 mph H 45%30.03 inHg

10:00 AM

Mostly sunny

74° 💧 None 💨 4 mph H 37%30.03 inHg

11:00 AM

Partly cloudy

76° 💧 None 💨 6 mph H 34%30.03 inHg

12:00 PM

Light thunderstorms

78° 💧 0.003 in 💨 6 mph H 34%30.00 inHg

1:00 PM

Light thunderstorms

77° 💧 0.025 in 💨 5 mph H 38%30.00 inHg

2:00 PM

Light rain

80° 💧 0.005 in 💨 4 mph H 30%29.94 inHg

3:00 PM

Light thunderstorms

78° 💧 0.008 in 💨 1 mph H 34%29.97 inHg

4:00 PM

Light rain

75° 💧 0.010 in 💨 6 mph H 41%29.97 inHg

5:00 PM

Light rain

74° 💧 0.011 in 💨 5 mph H 45%30.00 inHg

6:00 PM

Light thunderstorms

72° 💧 0.010 in 💨 6 mph H 50%30.03 inHg

7:00 PM

Light thunderstorms

67° 💧 0.013 in 💨 7 mph H 70%30.06 inHg

8:00 PM

Light thunderstorms

63° 💧 0.013 in 💨 6 mph H 86%30.03 inHg

9:00 PM

Clear night

62° 💧 0.000 in 💨 6 mph H 86%30.03 inHg

10:00 PM

Clear night

60° 💧 None 💨 6 mph H 86%30.03 inHg

11:00 PM

Clear night

57° 💧 None 💨 3 mph H 89%30.06 inHg

Wednesday

12:00 AM

Clear night

56° 💧 None 💨 3 mph H 86%30.09 inHg

1:00 AM

Clear night

55° 💧 None 💨 3 mph H 82%30.09 inHg

2:00 AM

Clear night

53° 💧 None 💨 3 mph H 82%30.09 inHg

3:00 AM

Clear night

54° 💧 None 💨 2 mph H 72%30.12 inHg

4:00 AM

Clear night

54° 💧 None 💨 4 mph H 68%30.12 inHg

5:00 AM

Clear night

53° 💧 None 💨 4 mph H 66%30.15 inHg

6:00 AM

Clear night

52° 💧 None 💨 2 mph H 64%30.18 inHg

7:00 AM

Sunny

56° 💧 None 💨 2 mph H 57%30.24 inHg

8:00 AM

Sunny

60° 💧 None 💨 4 mph H 54%30.27 inHg

9:00 AM

Sunny

64° 💧 None 💨 5 mph H 38%30.27 inHg

10:00 AM

Sunny

65° 💧 None 💨 6 mph H 31%30.27 inHg

11:00 AM

Sunny

67° 💧 None 💨 6 mph H 29%30.27 inHg

12:00 PM

Sunny

70° 💧 None 💨 5 mph H 27%30.24 inHg

1:00 PM

Sunny

72° 💧 None 💨 5 mph H 25%30.21 inHg

2:00 PM

Sunny

74° 💧 None 💨 6 mph H 24%30.15 inHg

3:00 PM

Sunny

75° 💧 None 💨 5 mph H 23%30.12 inHg

4:00 PM

Sunny

76° 💧 None 💨 4 mph H 22%30.09 inHg

5:00 PM

Mostly sunny

76° 💧 None 💨 3 mph H 23%30.06 inHg

6:00 PM

Sunny

74° 💧 None 💨 3 mph H 25%30.06 inHg

9:00 PM

Mostly clear night

62° 💧 None 💨 4 mph H 51%30.12 inHg

Thursday

12:00 AM

Clear night

55° 💧 None 💨 4 mph H 68%30.15 inHg

3:00 AM

Mostly clear night

50° 💧 None 💨 3 mph H 64%30.09 inHg

6:00 AM

Clear night

49° 💧 None 💨 2 mph H 56%30.09 inHg

9:00 AM

Sunny

70° 💧 None 💨 1 mph H 29%30.06 inHg

12:00 PM

Sunny

81° 💧 None 💨 6 mph H 19%29.97 inHg

3:00 PM

Sunny

88° 💧 None 💨 1 mph H 8%29.80 inHg

6:00 PM

Sunny

86° 💧 None 💨 7 mph H 8%29.74 inHg

9:00 PM

Clear night

68° 💧 None 💨 5 mph H 23%29.80 inHg

Friday

12:00 AM

Mostly clear night

60° 💧 None 💨 9 mph H 29%29.80 inHg

3:00 AM

Partly cloudy night

59° 💧 None 💨 9 mph H 28%29.77 inHg

6:00 AM

Partly cloudy night

58° 💧 None 💨 9 mph H 32%29.77 inHg

9:00 AM

Partly cloudy

75° 💧 None 💨 5 mph H 18%29.77 inHg

12:00 PM

Partly cloudy

86° 💧 None 💨 10 mph H 12%29.68 inHg

3:00 PM

Partly cloudy

88° 💧 None 💨 5 mph H 12%29.62 inHg

6:00 PM

Mostly sunny

84° 💧 None 💨 7 mph H 15%29.62 inHg

9:00 PM

Mostly clear night

71° 💧 None 💨 7 mph H 28%29.71 inHg

Saturday

12:00 AM

Partly cloudy night

61° 💧 None 💨 7 mph H 58%29.80 inHg

3:00 AM

Mostly clear night

58° 💧 None 💨 6 mph H 62%29.91 inHg

6:00 AM

Partly cloudy night

54° 💧 None 💨 4 mph H 60%30.00 inHg

9:00 AM

Mostly sunny

59° 💧 None 💨 3 mph H 48%30.00 inHg

12:00 PM

Mostly cloudy

69° 💧 None 💨 4 mph H 35%29.88 inHg

6:00 PM

Partly cloudy

74° 💧 None 💨 4 mph H 28%29.85 inHg

Sunday

12:00 AM

Partly cloudy night

85° 💧 None 💨 2 mph H 20%29.62 inHg

6:00 AM

Clear night

64° 💧 None 💨 7 mph H 41%29.68 inHg

12:00 PM

Sunny

57° 💧 None 💨 2 mph H 68%29.85 inHg

6:00 PM

Mostly sunny

73° 💧 None 💨 6 mph H 48%29.88 inHg

Monday

12:00 AM

Light rain

66° 💧 None 💨 4 mph H 78%29.88 inHg

6:00 AM

Overcast night

60° 💧 None 💨 4 mph H 99%29.88 inHg

12:00 PM

Mostly cloudy

57° 💧 None 💨 2 mph H 97%29.88 inHg

6:00 PM

Partly cloudy

70° 💧 None 💨 5 mph H 62%29.85 inHg

Tuesday

12:00 AM

Clear night

71° 💧 None 💨 6 mph H 51%29.85 inHg

6:00 AM

Mostly cloudy night

61° 💧 None 💨 3 mph H 61%30.09 inHg

12:00 PM

Mostly sunny

53° 💧 None 💨 0 mph H 63%30.12 inHg

6:00 PM

Mostly sunny

69° 💧 None 💨 4 mph H 43%30.06 inHg

Wednesday

12:00 AM

Mostly clear night

77° 💧 None 💨 1 mph H 37%29.88 inHg

6:00 AM

Clear night

55° 💧 None 💨 3 mph H 81%29.97 inHg

12:00 PM

Sunny

53° 💧 None 💨 1 mph H 74%30.06 inHg

6:00 PM

Mostly sunny

81° 💧 None 💨 6 mph H 33%30.06 inHg

Thursday

12:00 AM

Mostly clear night

76° 💧 None 💨 5 mph H 41%30.06 inHg

6:00 AM

Clear night

60° 💧 None 💨 7 mph H 65%30.12 inHg

12:00 PM

Mostly sunny

58° 💧 None 💨 2 mph H 65%30.21 inHg

6:00 PM

Mostly sunny

83° 💧 None 💨 5 mph H 29%30.21 inHg

Friday

12:00 AM

Light rain

80° 💧 None 💨 8 mph H 33%30.15 inHg

6:00 AM

Partly cloudy night

60° 💧 None 💨 4 mph H 75%30.33 inHg

12:00 PM

Mostly cloudy

58° 💧 None 💨 3 mph H 89%30.47 inHg

6:00 PM

Light rain

68° 💧 None 💨 6 mph H 73%30.47 inHg

Saturday

12:00 AM

Mostly clear night

67° 💧 None 💨 2 mph H 76%30.36 inHg

6:00 AM

Mostly clear night

61° 💧 None 💨 1 mph H 92%30.39 inHg

12:00 PM

Mostly cloudy

54° 💧 None 💨 2 mph H 96%30.27 inHg

6:00 PM

Partly cloudy

71° 💧 None 💨 3 mph H 57%30.18 inHg

Sunday

12:00 AM

Mostly cloudy night

72° 💧 None 💨 3 mph H 60%30.03 inHg

6:00 AM

Partly cloudy night

58° 💧 None 💨 3 mph H 89%29.97 inHg

12:00 PM

Mostly sunny

57° 💧 None 💨 5 mph H 80%29.94 inHg

6:00 PM

Mostly sunny

78° 💧 None 💨 6 mph H 41%29.85 inHg

Monday

12:00 AM

Light rain

69° 💧 None 💨 8 mph H 75%29.80 inHg

6:00 AM

Mostly cloudy night

58° 💧 None 💨 1 mph H 87%29.88 inHg

12:00 PM

Moderate rain

55° 💧 None 💨 6 mph H 88%29.88 inHg

In Altona and, more broadly, across the state of Colorado: This evening will be mostly sunny with a few clouds drifting through. Temperatures will remain mild to warm, holding steady around 76 degrees Fahrenheit. Light north winds are expected, with maximum sustained speeds of about 3 mph and gusts reaching up to 2 mph. No precipitation is anticipated during the next few hours, making for a calm and pleasant evening. Conditions should remain stable overnight, with temperatures staying steady and gentle breezes continuing from the north. Overall, it should be an uneventful and comfortable evening for outdoor activities or relaxing indoors.

15-Day Weather Outlook for Altona

TomorrowTomorrow

Light thunderstorms 80°/55° 💧 None 💨 7 mph

Wednesday, Sep 9Wed Sep 9

Light thunderstorms 76°/52° 💧 None 💨 7 mph

Thursday, Sep 10Thu Sep 10

Mostly sunny 88°/49° 💧 None 💨 6 mph

Friday, Sep 11Fri Sep 11

Partly cloudy 88°/58° 💧 0.000 in 💨 10 mph

Saturday, Sep 12Sat Sep 12

Mostly cloudy 84°/54° 💧 0.022 in 💨 7 mph

Sunday, Sep 13Sun Sep 13

Partly cloudy 85°/57° 💧 None 💨 7 mph

Monday, Sep 14Mon Sep 14

Light rain 73°/57° 💧 0.408 in 💨 6 mph

Tuesday, Sep 15Tue Sep 15

Partly cloudy 71°/53° 💧 0.019 in 💨 6 mph

Wednesday, Sep 16Wed Sep 16

Mostly sunny 77°/53° 💧 0.003 in 💨 4 mph

Thursday, Sep 17Thu Sep 17

Mostly sunny 81°/58° 💧 0.040 in 💨 7 mph

Friday, Sep 18Fri Sep 18

Light rain 83°/58° 💧 0.011 in 💨 8 mph

Saturday, Sep 19Sat Sep 19

Light rain 68°/54° 💧 0.138 in 💨 6 mph

Sunday, Sep 20Sun Sep 20

Partly cloudy 72°/57° 💧 0.045 in 💨 5 mph

Monday, Sep 21Mon Sep 21

Moderate rain 78°/55° 💧 0.097 in 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Altona

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Altona

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 2:00 AM

PM2.5 Fine particles Good 1,1µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 2,0µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 37,5µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 2,5µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Altona

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 6,0High 😊Good

Tomorrow UV 8,6Very high 😊Good

Wednesday UV 8,8Very high 🙂Fair

Thursday UV 8,6Very high 🙂Fair

Friday UV 7,0High 😊Good

Saturday UV 6,0High —Unavailable

Sunday UV 5,0Moderate —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,2 9:00 AMUV 0,9 10:00 AMUV 1,9 11:00 AMUV 2,9 12:00 PMUV 4,1 1:00 PMUV 6,0 2:00 PMUV 2,2 3:00 PMUV 4,5 4:00 PMUV 1,0 5:00 PMUV 0,8 6:00 PMUV 0,3

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Altona

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · ALTONA, COLORADO

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

44/100Best-hour score

No good viewing window tonight Astronomical darkness exists, but current sky conditions are unfavorable.

☁ Cloud cover 75% Real hourly forecast for the best viewing hour.

☾ Moonlight 20% Waning Crescent · Moon about 26° above the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 89° high at the best hour.

✦ Estimated visible meteors Poor visibility Meteor activity may occur above the clouds, but local viewing conditions are not suitable.

Chance ≥1 meteor in 30 minNot meaningful

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for Altona were last refreshed today at 1:32 AM. The current forecast period extends through 08/09/2026 at 11:00 PM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.