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Air Quality Index in Fresno, CA

Fresno has a generally poor air quality index with high levels of pollution throughout the year. The air quality is often affected by smog from nearby agriculture and traffic emissions. During the summer months, the AQI in Fresno can rise significantly due to high temperatures and ozone formation.

Air Quality Index

February 16, 2025
Low
Fair
Fair

Air quality is acceptable, but some individuals, particularly those unusually sensitive to air pollution, may experience minor health effects.

NO2
Good
PM2.5
Good
M10
Good
O3
Good

Air Quality Index

February 17, 2025
Low
Moderate
Moderate

Members of sensitive groups, such as children, the elderly, and individuals with respiratory conditions, may experience adverse health effects. The general population is less likely to be affected.

NO2
Good
PM2.5
Good
M10
Good
O3
Moderate

Air Quality Index

February 18, 2025
Low
Fair
Fair

Air quality is acceptable, but some individuals, particularly those unusually sensitive to air pollution, may experience minor health effects.

NO2
Good
PM2.5
Good
M10
Good
O3
Fair

Air Quality Index

February 19, 2025
Low
Moderate
Moderate

Members of sensitive groups, such as children, the elderly, and individuals with respiratory conditions, may experience adverse health effects. The general population is less likely to be affected.

NO2
Good
PM2.5
Good
M10
Good
O3
Moderate

Air Quality Index

February 20, 2025
Low
Moderate
Moderate

Members of sensitive groups, such as children, the elderly, and individuals with respiratory conditions, may experience adverse health effects. The general population is less likely to be affected.

NO2
Good
PM2.5
Good
M10
Good
O3
Moderate

Air Quality Index

February 21, 2025
Low
Fair
Fair

Air quality is acceptable, but some individuals, particularly those unusually sensitive to air pollution, may experience minor health effects.

NO2
Good
PM2.5
Good
M10
Good
O3
Fair

5-Day Air Quality Index Forecast in Fresno, CA

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Tips to Protect Yourself from Unhealthy Air Quality in Fresno, CA

Stay informed by checking Fresno’s air quality updates regularly to help you avoid outdoor activities when pollution levels are high.

Consider wearing an N95 mask when going outdoors to help protect you from inhaling harmful pollutants when the air quality is unhealthy.

Improve indoor air by using air purifiers with HEPA filters, keeping windows closed when pollution is high, and avoiding indoor activities that can release pollutants like smoking or burning candles.

FAQ

Frequently Asked Questions
  • When is AQI usually the worst in Fresno?

    AQI in Fresno is usually the worst during the summer and fall months due to high temperatures, increased ozone formation, and wildfire smoke that can drift into the area.

  • What are common pollutants that impact AQI in Fresno?

    Common pollutants in Fresno include ozone, particulate matter (PM2.5), nitrogen oxides, and dust from agriculture and vehicle emissions which significantly contribute to air pollution.

  • Are there specific areas in Fresno with better AQI?

    Areas in Fresno located farther from busy highways and industrial zones tend to have better air quality. Rural or suburban regions typically experience less pollution compared to the more densely populated urban areas.