Air Quality in Brea, United States

Windy
30.1°C · 26.9% humidity
30.1°
Feels 30.1°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
45 2pm
45
45
26 5pm
31
35
38 8pm
40
41
42 11pm
43
44
44 2am
44
45
45 5am
45
45
45 8am
45
45
45 11am
45
45
Station readings
42
46
50
25
CAMS model adj -9
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

48h · 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
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
26
6.28 µg/m³
PM10▲
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Brea?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.56.28 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX6.9
High
AD 300×250
Station readings (3 stations within 25 km)
6.28
Median
6.3
Average
5.21
Low
8.22
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +7.2

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
50
Garfield HS/Monterey CHS (8677)
26.9 km PM2.5: 12.0 µg/m³
25
united-states-of-america-san-marino-sierra-madre-boulevard
30.6 km 30.9°C 35.0% RH PM2.5: 6.0 µg/m³ PM10: 7.0 µg/m³
45
Sierra Park ES (6753)
30.9 km PM2.5: 10.9 µg/m³
50
Sierra Vista ES (6767)
31.1 km PM2.5: 12.0 µg/m³

What cities are near Brea?

39 La Habra 26 Placentia 26 Fullerton 62 Rowland Heights 26 Yorba Linda 26 Anaheim 40 La Mirada 37 Buena Park 45 Hacienda Heights 60 South San Jose Hills
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T00:41 UTC.