Air Quality in Placentia, United States
Windy
31.6°C · 26.9% humidity
31.6°
Feels 31.6°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
AQI Forecast
54
11am
54
54
23
2pm
32
38
43
5pm
46
48
50
8pm
51
52
52
11pm
53
53
53
2am
54
54
54
5am
54
54
54
8am
54
54
Air Quality Index Trend
48h · 2 stnPlacentia'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
57.6 km/h
Wind SSW
1005.6 hPa
Pressure
24.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
5.53 µg/m³
PM10▲
27.4 µg/m³
050100150200300500
What is the weather forecast for Placentia?
Temperature & Precipitation
PM2.5 Trend
48h · 2 stationsPM2.55.53 µg/m³
✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX24.9
Extreme
Station readings (1 station within 25 km)
5.53
Median
5.53
Average
5.53
Low
5.53
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +8.0
What is the 7-day forecast for Placentia?
07-21
30.6° 25.2°
07-22
31.6° 25.0°
07-23
31.6° 24.1°
07-24
35.1° 23.9°
07-25
33.7° 25.1°
07-26
34.2° 22.2°
07-27
33.9° 25.1°
Both models agree
Avg diff: 3.1°C
Where are air quality stations near Placentia?
11
Davis Elementary
11
Villa Intermediate
20
Kennedy Elementary
22
Century High School
8
Monroe Elementary
What cities are near Placentia?
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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 2026-07-21T21:43 UTC.