Hourly Air Quality Forecast - AQI (US EPA)
Moderate air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
2.69 µg/m³
- PM10:
11.57 µg/m³
- O3:
0.054 ppm
- NO2:
0.1 ppb
- SO2:
0 ppb
- CO:
0.07 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
2.81 µg/m³
- PM10:
12.19 µg/m³
- O3:
0.055 ppm
- NO2:
0.1 ppb
- SO2:
0 ppb
- CO:
0.07 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Good air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
2.96 µg/m³
- PM10:
12.93 µg/m³
- O3:
0.054 ppm
- NO2:
0.1 ppb
- SO2:
0 ppb
- CO:
0.07 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.06 µg/m³
- PM10:
13.51 µg/m³
- O3:
0.053 ppm
- NO2:
0.1 ppb
- SO2:
0 ppb
- CO:
0.07 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.16 µg/m³
- PM10:
14 µg/m³
- O3:
0.052 ppm
- NO2:
0.1 ppb
- SO2:
0 ppb
- CO:
0.07 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.34 µg/m³
- PM10:
14.93 µg/m³
- O3:
0.051 ppm
- NO2:
0.2 ppb
- SO2:
0 ppb
- CO:
0.07 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.57 µg/m³
- PM10:
16.14 µg/m³
- O3:
0.050 ppm
- NO2:
0.2 ppb
- SO2:
0 ppb
- CO:
0.08 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.74 µg/m³
- PM10:
16.42 µg/m³
- O3:
0.047 ppm
- NO2:
0.3 ppb
- SO2:
0 ppb
- CO:
0.08 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.92 µg/m³
- PM10:
16.48 µg/m³
- O3:
0.043 ppm
- NO2:
0.5 ppb
- SO2:
0 ppb
- CO:
0.08 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Weather Alerts and Warnings for Tucson
Air Quality Alert
Air Quality Alert issued May 20 at 1:56PM MST by NWS Tucson AZ
May 20, 2:56 PM
→ May 21, 3:00 PM
The Pima County Department of Environmental Quality (PDEQ) has
issued an Ozone Action Day for the Tucson Metro area until 8 PM MST
this evening.
This means that forecast weather conditions combined with existing
ozone levels are expected to result in local maximum 8-hour ozone
concentrations that pose a health risk. Adverse health effects
increase as air quality deteriorates.
Ozone is an air pollutant which can cause breathing difficulties for
children, older adults, as well as persons with respiratory
problems. A decrease in physical activity is recommended.
You are urged to car pool, telecommute, or use mass transit. The use
of gasoline-powered equipment should be reduced or done late in the
day.
For details on this Action Day, visit the PDEQ website at
www.pima.gov/deq or call 520-724-6885.
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