AIR QUALITY MI

Air Quality in Flint, MI: Good (47 AQI)

AQI 47 · Good · PM2.5 · Updated 2026-05-03

Flint's air quality is good. Air pollution poses little or no risk.

Data: EPA AirNow, FEMA National Risk Index Last verified: 2026-05-03

Average AQI

Good

AQI Category

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. Flint's average AQI of 47 falls in the "Good" range.

Air Quality Map: Flint, MI

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 Flint

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

ZIP Code	AQI	Category	Wildfire	Mold
48501	47	Good	16	41	View report →
48502	47	Good	16	55	View report →
48503	47	Good	16	61	View report →
48504	47	Good	16	61	View report →
48505	47	Good	16	55	View report →
48506	47	Good	16	61	View report →
48507	47	Good	16	61	View report →
48531	47	Good	16	37	View report →
48532	47	Good	16	50	View report →
48550	47	Good	16	37	View report →
48551	47	Good	11	37	View report →
48552	47	Good	11	37	View report →
48553	47	Good	11	37	View report →
48554	47	Good	16	37	View report →
48555	47	Good	16	37	View report →

Showing 15 of 17 ZIP codes. View all.

Air Quality Overview

Flint, Michigan has good air quality with an average AQI of 47. This means air pollution poses little or no risk. The dominant pollutant measured 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 Flint

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

ZIP Code	AQI	Category	Wildfire Risk	Mold Score
48501	47	Good	16	41
48502	47	Good	16	55
48503	47	Good	16	61
48504	47	Good	16	61
48505	47	Good	16	55
48506	47	Good	16	61
48507	47	Good	16	61
48531	47	Good	16	37
48532	47	Good	16	50
48550	47	Good	16	37
48551	47	Good	11	37
48552	47	Good	11	37
48553	47	Good	11	37
48554	47	Good	16	37
48555	47	Good	16	37

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

Wildfire Smoke Risk

Flint has an elevated wildfire smoke risk with an average smoke risk score of 15 (scale 0-100). There have been 17 fires recorded within 100 km of city ZIP codes.

Metric	Value
Avg. smoke risk score	15
Max smoke risk score	16
Fires within 100 km	17
High-risk ZIP codes	0

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

Flint has an average mold risk score of 46 out of 100, with 6 ZIP codes in the high-risk category.

Factor	Value
Mold risk score	46/100
Average humidity	70% RH
High-risk ZIPs	6
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 good air quality (AQI 47), Flint residents can enjoy outdoor activities without significant restrictions. General tips:

Monitor AQI during wildfire season for temporary spikes
Use HEPA air purifiers indoors if you have respiratory conditions
Maintain indoor humidity between 30-50% to prevent mold

Flint vs. Nearby Michigan Cities

How Flint's air quality compares to nearby cities:

City	AQI	Category	Population
Flint	47	Good	164,760
Waterford	89	Moderate	157,492
Holland	N/A	N/A	151,394
Saint Clair Shores	105	USG	180,254

ZIP Codes in Flint

Flint 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

Updated daily.

Frequently Asked Questions

Is the air safe to breathe in Flint?

Yes — Flint's average AQI is 47 (Good). Air pollution poses little or no risk for the general population.

How many unhealthy air days does Flint have?

Flint has zero recorded unhealthy air quality days, which is excellent. Air quality can still vary seasonally due to wildfire smoke, pollen, or industrial activity.

What is the AQI in Flint?

The average Air Quality Index (AQI) in Flint is 47, categorized as Good. 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 Flint?

Flint has a wildfire risk score of 15 out of 100. Low wildfire risk means smoke events are uncommon, but regional fires can still temporarily affect air quality.

Is mold a concern in Flint?

Flint has a mold risk score of 46 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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