Hourly Weather | Today Wednesday, March 18, 2026
Flagstaff, Arizona
7 AM
Sunny Weather
41°
Feels Like 39°
0
Humidity: 35%
UV Index: 1
Wind: 6 mph
8 AM
Sunny Weather
46°
Feels Like 48°
0
Humidity: 36%
UV Index: 2
Wind: 6 mph
9 AM
Sunny Weather
55°
Feels Like 57°
0
Humidity: 26%
UV Index: 3
Wind: 7 mph
10 AM
Sunny Weather
63°
Feels Like 66°
0
Humidity: 17%
UV Index: 5
Wind: 8 mph
11 AM
Sunny Weather
68°
Feels Like 73°
0
Humidity: 13%
UV Index: 6
Wind: 9 mph
12 PM
Sunny Weather
72°
Feels Like 77°
0
Humidity: 11%
UV Index: 7
Wind: 9 mph
1 PM
Sunny Weather
75°
Feels Like 79°
0
Humidity: 10%
UV Index: 6
Wind: 9 mph
2 PM
Sunny Weather
77°
Feels Like 81°
0
Humidity: 9%
UV Index: 5
Wind: 9 mph
3 PM
Sunny Weather
79°
Feels Like 81°
0
Humidity: 8%
UV Index: 3
Wind: 9 mph
4 PM
Sunny Weather
79°
Feels Like 79°
0
Humidity: 9%
UV Index: 2
Wind: 8 mph
5 PM
Sunny Weather
75°
Feels Like 73°
0
Humidity: 10%
UV Index: 1
Wind: 8 mph
6 PM
Sunny Weather
70°
Feels Like 68°
0
Humidity: 12%
UV Index: 0
Wind: 7 mph
7 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 15%
UV Index: 0
Wind: 5 mph
8 PM
Cloudy Night
57°
Feels Like 57°
0
Humidity: 19%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
54°
Feels Like 54°
0
Humidity: 23%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
52°
Feels Like 50°
0
Humidity: 24%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
48°
Feels Like 46°
0
Humidity: 26%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.49 µg/m³
  • PM10: 6.01 µg/m³
  • O3: 0.018 ppm
  • NO2: 3.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.47 µg/m³
  • PM10: 5.95 µg/m³
  • O3: 0.017 ppm
  • NO2: 4.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.53 µg/m³
  • PM10: 6.14 µg/m³
  • O3: 0.017 ppm
  • NO2: 4.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.53 µg/m³
  • PM10: 6.31 µg/m³
  • O3: 0.019 ppm
  • NO2: 3.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.59 µg/m³
  • PM10: 6.52 µg/m³
  • O3: 0.020 ppm
  • NO2: 3.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.93 µg/m³
  • PM10: 7.06 µg/m³
  • O3: 0.024 ppm
  • NO2: 3.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.64 µg/m³
  • PM10: 6.45 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.15 µg/m³
  • PM10: 6.75 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

3 PM
54 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.64 µg/m³
  • PM10: 7.23 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
58 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.51 µg/m³
  • PM10: 6.81 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
58 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.56 µg/m³
  • PM10: 6.96 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.59 µg/m³
  • PM10: 7.28 µg/m³
  • O3: 0.056 ppm
  • NO2: 1 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 3.59 µg/m³
  • PM10: 7.73 µg/m³
  • O3: 0.053 ppm
  • NO2: 1.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.6 µg/m³
  • PM10: 8.33 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.61 µg/m³
  • PM10: 9 µg/m³
  • O3: 0.045 ppm
  • NO2: 2.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.63 µg/m³
  • PM10: 9.4 µg/m³
  • O3: 0.040 ppm
  • NO2: 3.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.68 µg/m³
  • PM10: 9.66 µg/m³
  • O3: 0.036 ppm
  • NO2: 3.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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