Air Quality in Brea, United States

Windy
30.1°C · 26.9% humidity
30.1°
Feels 30.1°
45
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast

Nearby Monitoring Stations

AQI Forecast Calibrated
40 4pm
40
40
45 7pm
44
43
42 10pm
41
41
41 1am
40
40
40 4am
40
40
40 7am
40
40
40 10am
40
40
40 1pm
40
40
Station readings
50
25
25
CAMS model adj -14
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
54
AD 728×90

Air Quality Index Trend

47h · 1 stn

Brea's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

26.9%
Humidity
62.3 km/h
Wind WSW
1008.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
45
10.85 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Brea?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.510.85 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
AD 300×250

What is the 7-day forecast for Brea?

06-09
30.1° 19.0°
06-10
29.0° 19.6°
06-11
28.0° 19.5°
06-12
28.9° 19.7°
0.13 mm
06-13
32.2° 21.1°
06-14
28.6° 24.0°
06-15
25.4° 17.5°
Both models agree Avg diff: 3.4°C

Where are air quality stations near Brea?

11
Davis Elementary
18.0 km PM2.5: 2.7 µg/m³
22
Villa Intermediate
19.8 km PM2.5: 5.2 µg/m³
20
Kennedy Elementary
20.9 km PM2.5: 4.8 µg/m³
34
Century High School
21.3 km PM2.5: 8.2 µg/m³
23
Monroe Elementary
22.8 km PM2.5: 5.5 µg/m³
48
Garfield HS/Monterey CHS (8677)
26.9 km PM2.5: 11.5 µg/m³
25
united-states-of-america-san-marino-sierra-madre-boulevard
30.6 km 29.6°C 37.0% RH PM2.5: 6.0 µg/m³ PM10: 7.0 µg/m³
41
Sierra Park ES (6753)
30.9 km PM2.5: 9.9 µg/m³
46
Sierra Vista ES (6767)
31.1 km PM2.5: 11.1 µg/m³

What cities are near Brea?

45 La Habra 42 Placentia 42 Fullerton 7 Rowland Heights 42 Yorba Linda 42 Anaheim 45 La Mirada 42 Buena Park 16 Hacienda Heights 13 South San Jose Hills
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T02:09 UTC.