AIR QUALITY CA

Air Quality in Anaheim, CA: Moderate (54 AQI)

AQI 54 · Moderate · PM2.5 · Updated

Anaheim's air quality is moderate. Unusually sensitive people should consider reducing prolonged outdoor exertion.

Data: EPA AirNow, FEMA National Risk Index Last verified:

Average AQI

Moderate

AQI Category

Unhealthy Days

Wildfire Risk

Mold Score

ZIP Codes

What is AQI?

The Air Quality Index (AQI) is a standardized scale from 0 to 500 that measures air pollution levels. 0-50 is "Good," 51-100 is "Moderate," 101-150 is "Unhealthy for Sensitive Groups," and above 150 is "Unhealthy" for everyone. AQI tracks five major pollutants: ground-level ozone, particulate matter (PM2.5 and PM10), carbon monoxide, sulfur dioxide, and nitrogen dioxide. Anaheim's average AQI of 54 falls in the "Moderate" range.

How do wildfires affect air quality?

Wildfire smoke contains fine particulate matter (PM2.5) that can travel hundreds of miles and dramatically spike AQI readings. During fire season, even cities far from active fires can experience unhealthy air. HEPA air purifiers (rated for PM2.5) are the most effective indoor protection. Check AirNow.gov for real-time conditions during fire season.

Air Quality Map: Anaheim, CA

Each dot represents a ZIP code. Color indicates AQI level. Tap a dot for details.

Good (0-50) Moderate (51-100) USG (101-150) Unhealthy (151+)

Air Quality by ZIP Code in Anaheim

AQI varies across Anaheim's 17 ZIP codes based on proximity to pollution sources and local geography.

ZIP Code	AQI	Category	Wildfire	Mold
92801	58	Moderate	48	47	View report →
92802	58	Moderate	48	52	View report →
92803	58	Moderate	48	55	View report →
92804	58	Moderate	48	55	View report →
92809	58	Moderate	48	55	View report →
92812	58	Moderate	48	55	View report →
92814	58	Moderate	48	55	View report →
92850	58	Moderate	48	55	View report →
92805	51	Moderate	48	47	View report →
92806	51	Moderate	53	50	View report →
92807	51	Moderate	54	36	View report →
92808	51	Moderate	54	21	View report →
92815	51	Moderate	48	55	View report →
92816	51	Moderate	48	55	View report →
92817	51	Moderate	54	12	View report →

Showing 15 of 17 ZIP codes. View all.

Air Quality Overview

Anaheim, California has moderate air quality with an average AQI of 54. Air quality is acceptable, though some pollutants may be a concern for a small number of people who are unusually sensitive to air pollution. The dominant pollutant is PM2.5.

The Air Quality Index (AQI) is an EPA-standardized scale from 0 to 500. Values below 50 are "Good," 51-100 "Moderate," 101-150 "Unhealthy for Sensitive Groups," 151-200 "Unhealthy," 201-300 "Very Unhealthy," and above 300 "Hazardous."

Dominant Pollutant: PM2.5

PM2.5 (fine particulate matter) consists of particles smaller than 2.5 micrometers - about 30 times thinner than a human hair. These particles can penetrate deep into the lungs and enter the bloodstream.

Health effects of PM2.5 exposure:

Short-term: coughing, shortness of breath, aggravated asthma
Long-term: reduced lung function, cardiovascular disease, premature death
Most vulnerable: children, elderly, people with heart or lung disease

Common sources in urban areas: vehicle exhaust, construction dust, industrial emissions, wildfire smoke, residential wood burning.

Air Quality by ZIP Code in Anaheim

AQI varies across Anaheim's 17 ZIP codes based on proximity to pollution sources, traffic patterns, and local geography:

ZIP Code	AQI	Category	Wildfire Risk	Mold Score
92801	58	Moderate	48	47
92802	58	Moderate	48	52
92803	58	Moderate	48	55
92804	58	Moderate	48	55
92809	58	Moderate	48	55
92812	58	Moderate	48	55
92814	58	Moderate	48	55
92850	58	Moderate	48	55
92805	51	Moderate	48	47
92806	51	Moderate	53	50
92807	51	Moderate	54	36
92808	51	Moderate	54	21
92815	51	Moderate	48	55
92816	51	Moderate	48	55
92817	51	Moderate	54	12

Showing 15 of 17 ZIP codes. Check your specific ZIP for detailed data.

Wildfire Smoke Risk

Anaheim has an elevated wildfire smoke risk with an average smoke risk score of 49 (scale 0-100). There have been 623 fires recorded within 100 km of city ZIP codes.

Metric	Value
Avg. smoke risk score	49
Max smoke risk score	54
Fires within 100 km	623
High-risk ZIP codes	17

Wildfire smoke contains PM2.5, carbon monoxide, and volatile organic compounds. Even short-term exposure can trigger asthma attacks and respiratory distress.

Indoor Mold Risk

Anaheim has an average mold risk score of 48 out of 100, with 10 ZIP codes in the high-risk category.

Factor	Value
Mold risk score	48/100
Average humidity	66% RH
High-risk ZIPs	10
Peak season	summer high

Mold risk is influenced by humidity levels, housing age (older homes have more moisture issues), flood history, and water infrastructure quality. Indoor humidity above 60% creates favorable conditions for mold growth.

Signs of mold problems: musty odors, visible growth on walls or ceilings, worsening allergies indoors, condensation on windows. Professional mold testing ($300-$600) can identify hidden issues.

Health Recommendations

With moderate air quality (AQI 54), most people can be active outdoors. Sensitive groups should take precautions:

Sensitive groups (asthma, COPD, heart disease): consider reducing prolonged outdoor exertion
Keep windows closed on high-pollution days
Use a HEPA air purifier in main living areas
Check AirNow.gov before outdoor exercise

Anaheim vs. Nearby California Cities

How Anaheim's air quality compares to nearby cities:

City	AQI	Category	Population
Anaheim	54	Moderate	361,314
Santa Ana	58	Moderate	335,987
Stockton	49	Good	388,283
Irvine	64	Moderate	308,406

ZIP Codes in Anaheim

Anaheim covers 17 ZIP codes. Air quality can vary by neighborhood based on proximity to highways, industrial areas, and green spaces. Check your specific ZIP code for localized data.

Data Sources

Air quality: EPA AirNow - real-time and historical AQI data
Wildfire risk: FEMA National Risk Index
Mold risk: Derived from EPA, FEMA, Census ACS (humidity, housing age, flood history)
Monthly AQI: EPA Air Quality Statistics

Source reporting periods vary. See each cited source for its publication schedule.

Frequently Asked Questions

Is the air safe to breathe in Anaheim?

Anaheim's average AQI is 54 (Moderate). Air quality is acceptable, but unusually sensitive individuals may experience respiratory symptoms during peak pollution times.

How many unhealthy air days does Anaheim have?

Anaheim experiences 8 unhealthy air quality days per year on average. During these days, everyone - not just sensitive groups - should reduce prolonged outdoor exertion.

What is the AQI in Anaheim?

The average Air Quality Index (AQI) in Anaheim is 54, categorized as Moderate. The primary pollutant is PM2.5. AQI ranges from 0-500, where 0-50 is Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, and 151+ Unhealthy.

What is the wildfire risk in Anaheim?

Anaheim has a wildfire risk score of 49 out of 100. Moderate wildfire risk means smoke events are possible. Having a HEPA air purifier available is recommended.

Is mold a concern in Anaheim?

Anaheim has a mold risk score of 48 out of 100, based on humidity, precipitation, and temperature data. Maintain good ventilation and address any water intrusion promptly to prevent mold growth.

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