Hourly Weather | Today Sunday, November 2, 2025
Longmont, Colorado
1 AM
Cloudy Night
37°
Feels Like 34°
0
Humidity: 49%
Wind: 7 mph
UV Index: 0
2 AM
Cloudy Night
37°
Feels Like 34°
0
Humidity: 60%
Wind: 7 mph
UV Index: 0
3 AM
Cloudy Night
37°
Feels Like 34°
0
Humidity: 61%
Wind: 7 mph
UV Index: 0
4 AM
Cloudy Night
37°
Feels Like 34°
0
Humidity: 61%
Wind: 7 mph
UV Index: 0
5 AM
Cloudy Night
37°
Feels Like 34°
0
Humidity: 61%
Wind: 7 mph
UV Index: 0
6 AM
Cloudy Night
37°
Feels Like 34°
0
Humidity: 61%
Wind: 7 mph
UV Index: 0
7 AM
Cloudy Night
37°
Feels Like 34°
0
Humidity: 62%
Wind: 7 mph
UV Index: 0
8 AM
Sunny Weather
37°
Feels Like 34°
0
Humidity: 64%
Wind: 7 mph
UV Index: 0
9 AM
Sunny Weather
45°
Feels Like 41°
0
Humidity: 55%
Wind: 7 mph
UV Index: 1
10 AM
Cloudy Weather
52°
Feels Like 52°
0
Humidity: 43%
Wind: 8 mph
UV Index: 2
11 AM
Cloudy Weather
61°
Feels Like 61°
0
Humidity: 31%
Wind: 8 mph
UV Index: 3
12 PM
Cloudy Weather
68°
Feels Like 70°
0
Humidity: 21%
Wind: 8 mph
UV Index: 3
1 PM
Cloudy Weather
72°
Feels Like 73°
0
Humidity: 18%
Wind: 8 mph
UV Index: 3
2 PM
Cloudy Weather
73°
Feels Like 75°
0
Humidity: 16%
Wind: 8 mph
UV Index: 3
3 PM
Sunny Weather
77°
Feels Like 79°
0
Humidity: 14%
Wind: 8 mph
UV Index: 3
4 PM
Sunny Weather
75°
Feels Like 75°
0
Humidity: 15%
Wind: 8 mph
UV Index: 2
5 PM
Sunny Weather
72°
Feels Like 72°
0
Humidity: 18%
Wind: 7 mph
UV Index: 1
6 PM
Night
68°
Feels Like 64°
0
Humidity: 23%
Wind: 7 mph
UV Index: 0
7 PM
Night
63°
Feels Like 61°
0
Humidity: 28%
Wind: 7 mph
UV Index: 0
8 PM
Night
57°
Feels Like 55°
0
Humidity: 32%
Wind: 8 mph
UV Index: 0
9 PM
Night
55°
Feels Like 52°
0
Humidity: 35%
Wind: 8 mph
UV Index: 0
10 PM
Night
52°
Feels Like 48°
0
Humidity: 39%
Wind: 8 mph
UV Index: 0
11 PM
Night
48°
Feels Like 46°
0
Humidity: 44%
Wind: 7 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.94 µg/m³
  • PM10: 1.04 µg/m³
  • O3: 0.029 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.96 µg/m³
  • PM10: 1.07 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.98 µg/m³
  • PM10: 1.08 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.99 µg/m³
  • PM10: 1.09 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1 µg/m³
  • PM10: 1.11 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 AM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.02 µg/m³
  • PM10: 1.14 µg/m³
  • O3: 0.027 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 AM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.02 µg/m³
  • PM10: 1.15 µg/m³
  • O3: 0.027 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 AM
25 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.02 µg/m³
  • PM10: 1.16 µg/m³
  • O3: 0.027 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 AM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.03 µg/m³
  • PM10: 1.2 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.7 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 AM
28 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.05 µg/m³
  • PM10: 1.25 µg/m³
  • O3: 0.030 ppm
  • NO2: 0.6 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.09 µg/m³
  • PM10: 1.3 µg/m³
  • O3: 0.031 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.19 µg/m³
  • PM10: 1.42 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.4 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

12 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.91 µg/m³
  • PM10: 1.07 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.78 µg/m³
  • PM10: 0.91 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.77 µg/m³
  • PM10: 0.88 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.1 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.8 µg/m³
  • PM10: 0.9 µg/m³
  • O3: 0.036 ppm
  • NO2: 0.2 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.87 µg/m³
  • PM10: 0.96 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.5 ppb
  • SO2: 0 ppb
  • CO: 0.06 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.9 µg/m³
  • PM10: 1 µg/m³
  • O3: 0.031 ppm
  • NO2: 1 ppb
  • SO2: 0 ppb
  • CO: 0.07 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.91 µg/m³
  • PM10: 1.01 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.5 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.95 µg/m³
  • PM10: 1.06 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.9 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.99 µg/m³
  • PM10: 1.11 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.2 ppb
  • SO2: 0 ppb
  • CO: 0.08 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
21 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.99 µg/m³
  • PM10: 1.13 µg/m³
  • O3: 0.022 ppm
  • NO2: 2.3 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.01 µg/m³
  • PM10: 1.15 µg/m³
  • O3: 0.021 ppm
  • NO2: 2.3 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.03 µg/m³
  • PM10: 1.18 µg/m³
  • O3: 0.021 ppm
  • NO2: 2.3 ppb
  • SO2: 0 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.