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Today Hourly 7 days 30 days Air Quality
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Hourly Weather | Today | Thursday, September 4, 2025
Longmont, Colorado
6 AM
NightNighttime, with dark skies and stars or a moon visible.
54°
Feels Like 52°
0
Humidity: 70%
Wind: 5 mph
UV Index: 0
7 AM
Sunny WeatherSunny weather, clear skies and sunny weather.
55°
Feels Like 55°
0
Humidity: 59%
Wind: 5 mph
UV Index: 4
8 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
63°
Feels Like 64°
0
Humidity: 47%
Wind: 5 mph
UV Index: 14
9 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
70°
Feels Like 72°
0
Humidity: 36%
Wind: 5 mph
UV Index: 24
10 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
79°
Feels Like 81°
0
Humidity: 26%
Wind: 6 mph
UV Index: 38
11 AM
Cloudy WeatherCloudy weather, overcast skies with clouds.
82°
Feels Like 88°
0
Humidity: 21%
Wind: 7 mph
UV Index: 50
12 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
86°
Feels Like 91°
0
Humidity: 18%
Wind: 7 mph
UV Index: 64
1 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
88°
Feels Like 93°
0
Humidity: 17%
Wind: 7 mph
UV Index: 72
2 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
90°
Feels Like 95°
0
Humidity: 16%
Wind: 6 mph
UV Index: 64
3 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
90°
Feels Like 93°
0
Humidity: 15%
Wind: 6 mph
UV Index: 50
4 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
88°
Feels Like 90°
0
Humidity: 17%
Wind: 7 mph
UV Index: 38
5 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
86°
Feels Like 86°
0
Humidity: 19%
Wind: 8 mph
UV Index: 24
6 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
82°
Feels Like 82°
0
Humidity: 23%
Wind: 8 mph
UV Index: 14
7 PM
Cloudy WeatherCloudy weather, overcast skies with clouds.
79°
Feels Like 77°
0
Humidity: 28%
Wind: 8 mph
UV Index: 4
8 PM
Cloudy WeatherCloudy weather, overcast skies with no rain.
75°
Feels Like 73°
2
Humidity: 34%
Wind: 9 mph
UV Index: 0
9 PM
Cloudy WeatherCloudy weather, overcast skies with no rain.
72°
Feels Like 70°
2
Humidity: 40%
Wind: 9 mph
UV Index: 0
10 PM
Cloudy WeatherCloudy weather, overcast skies with no rain.
70°
Feels Like 66°
2
Humidity: 47%
Wind: 9 mph
UV Index: 0
11 PM
Cloudy WeatherCloudy weather, overcast skies with no rain.
66°
Feels Like 64°
2
Humidity: 53%
Wind: 8 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 7.47 µg/m³
  • PM10: 7.75 µg/m³
  • O₃: 25.95 ppb
  • NO₂: 8.65 ppb
  • SO₂: 0.27 ppb
  • CO: 161.99 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

7 AM
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 7.01 µg/m³
  • PM10: 7.28 µg/m³
  • O₃: 29.00 ppb
  • NO₂: 7.59 ppb
  • SO₂: 0.27 ppb
  • CO: 164.68 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

8 AM
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.38 µg/m³
  • PM10: 6.57 µg/m³
  • O₃: 32.04 ppb
  • NO₂: 6.54 ppb
  • SO₂: 0.28 ppb
  • CO: 167.37 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

9 AM
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.43 µg/m³
  • PM10: 6.65 µg/m³
  • O₃: 35.08 ppb
  • NO₂: 5.48 ppb
  • SO₂: 0.29 ppb
  • CO: 170.07 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

10 AM
56 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.44 µg/m³
  • PM10: 7.03 µg/m³
  • O₃: 45.59 ppb
  • NO₂: 3.97 ppb
  • SO₂: 0.28 ppb
  • CO: 150.00 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

11 AM
55 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.70 µg/m³
  • PM10: 7.55 µg/m³
  • O₃: 56.10 ppb
  • NO₂: 2.46 ppb
  • SO₂: 0.28 ppb
  • CO: 129.94 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

12 PM
55 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 7.26 µg/m³
  • PM10: 8.34 µg/m³
  • O₃: 66.61 ppb
  • NO₂: 0.95 ppb
  • SO₂: 0.27 ppb
  • CO: 109.88 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

1 PM
54 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 7.24 µg/m³
  • PM10: 8.32 µg/m³
  • O₃: 67.41 ppb
  • NO₂: 0.85 ppb
  • SO₂: 0.25 ppb
  • CO: 107.78 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

2 PM
53 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.85 µg/m³
  • PM10: 7.87 µg/m³
  • O₃: 68.21 ppb
  • NO₂: 0.74 ppb
  • SO₂: 0.22 ppb
  • CO: 105.69 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

3 PM
53 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 6.46 µg/m³
  • PM10: 7.42 µg/m³
  • O₃: 69.01 ppb
  • NO₂: 0.64 ppb
  • SO₂: 0.20 ppb
  • CO: 103.59 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

4 PM
65 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 6.21 µg/m³
  • PM10: 7.13 µg/m³
  • O₃: 67.29 ppb
  • NO₂: 1.17 ppb
  • SO₂: 0.21 ppb
  • CO: 107.25 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

5 PM
77 AQI
Moderate air quality Dominant pollutant: o3
Details

Pollutant Concentrations:

  • PM2.5: 6.12 µg/m³
  • PM10: 7.01 µg/m³
  • O₃: 65.58 ppb
  • NO₂: 1.70 ppb
  • SO₂: 0.22 ppb
  • CO: 110.90 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

Current Real-Time Air Quality Report