AQI

Fullerton Air Quality Index & Realtime Air Pollution

Live AQI
73(AQI-US)
Air Quality is
Moderate
PM2.5 :22.6µg/m³
PM10 :31.5µg/m³
Good
Moderate
Poor
Unhealthy
Severe
Hazardous
050100150200300301+
Moderate air quality mascot

Primary Air Pollutants Fullerton (California)

PM2.523µg/m³
PM2.5
Fine particles
PM1032µg/m³
PM10
Coarse particles
SO₂5µg/m³
SO₂
Sulphur dioxide
CO132µg/m³
CO
Carbon monoxide
NO₂8µg/m³
NO₂
Nitrogen dioxide
O₃133µg/m³
O₃
Ozone

Hourly forecast Fullerton (California)

Now25°
Clear sky
18:0024°
Clear sky
19:0022°
Clear sky
20:0020°
Clear sky
21:0018°
Clear sky
22:0017°
Clear sky
23:0016°
Clear sky
00:0016°
Mostly clear
01:0016°
Partly cloudy
02:0016°
Overcast
03:0016°
Overcast
04:0015°
Fog
05:0015°
Fog
06:0015°
Overcast
07:0016°
Overcast
08:0017°
Overcast
09:0019°
Partly cloudy
10:0021°
Partly cloudy
11:0025°
Clear sky
12:0026°
Clear sky
13:0027°
Clear sky
14:0027°
Clear sky
15:0026°
Clear sky
16:0025°
Clear sky

Health Recommendations for Fullerton Residents

Based on current air quality: Moderate · AQI 73

Moderate
Air Purifier
Air PurifierTurn On
Car Filter
Car FilterMust
N95 Mask
N95 MaskMust
Stay Indoor
Stay IndoorMust

UV Index

2.3

Low

Safe to be outside. Minimal UV risk.

Wind

15.3 km/h

Moderate wind — noticeable and steady.

AQI Graph

Historical AQI Data Fullerton (California)

70
Min. AQIat 1:00 AM on 3rd Jun
80
Max. AQIat 8:00 PM on 3rd Jun
03-06-2026Time04-06-2026

United States Major Cities AQI Overview


Most Polluted Cities by AQI United States

119
Poor3x above Standard
93
Moderate2x above Standard
81
Moderate2x above Standard
79
Moderate1x above Standard
75
Moderate1x above Standard
75
Moderate3x above Standard
75
Moderate3x above Standard
73
Moderate2x above Standard
72
Moderate1x above Standard
67
Moderate1x above Standard
Last Updated: 03 Jun 2026, 22:43

Health Advice For People Living in Fullerton

1.0
Cigarettes
per day
Weekly7.0 Cigarettes
Monthly30 Cigarettes

Breathing the air in this location is equivalent to smoking 1.0 cigarettes a day.

Disclaimer: This cigarette-equivalent estimate is calculated using the average PM2.5 concentration from the past 24 hours, assuming constant exposure throughout that period.
Solutions for Fullerton Current AQI (US)
Air Purifier
Air PurifierTurn On
Car Filter
Car FilterMust
N95 Mask
N95 MaskMust
Stay Indoor
Stay IndoorMust
Must turn on the air purifier to enjoy fresh air.Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Fullerton · Current air quality: Moderate · AQI 73

Mild Trigger Risk

Headaches

Risk of Headaches symptoms is Mild when AQI of Fullerton is Moderate (51-100).

Common signs

Symptoms often include: Pressure or tightness around the forehead and temples, Sensitivity to light or smell, Fatigue or difficulty concentrating.

Do’s :
  • Prefer indoor, filtered air when the AQI is elevated.
  • Drink water and pause from screen time or strong light if you are migraine-prone.
  • If you Consider using prescribed migraine meds, Store them accessible.
Don’ts :
  • Avoid do intense outdoor exercise during poor AQI periods.
  • Try not to ignore worsening issues that feel unusual for you.

Disclaimer: The health risks mentioned above are precautionary recommendations based on current AQI levels. While you may not experience immediate effects, prolonged exposure to air pollution can lead to these health issues over time. This is not medical advice. Please consult a clinician if you experience severe, unusual, or worsening symptoms.

Air Quality FAQs at Fullerton, California

The current real-time AQI (US) level in Fullerton, California is 73 (Moderate). This was last updated recently.

The best AQI (US) level was generally lower during the early afternoon in the last 24 hours.

The worst AQI (US) level typically peaks during early morning or late evening hours due to temperature inversion.

The AQI (US) levels in Fullerton, California have been fluctuating throughout the last 24 hours depending on traffic and weather conditions.

Current AQI (US) levels are moderate for everyone. It's advised to adjust your outdoor activities based on personal sensitivity.