Air Quality in Placentia, United States
Clear
29.9°C · 31.0% humidity
29.9°
Feels 29.9°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
AQI Forecast
54
10am
54
54
25
1pm
33
39
43
4pm
46
49
50
7pm
51
52
53
10pm
53
53
53
1am
54
54
54
4am
54
54
54
7am
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.
31.0%
Humidity
39.0 km/h
Wind SW
1008.4 hPa
Pressure
29.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.94 µg/m³
PM10
27.4 µg/m³
050100150200300500
What is the weather forecast for Placentia?
Temperature & Precipitation
PM2.5 Trend
48h · 2 stationsPM2.55.94 µg/m³
✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX29.9
Extreme
Station readings (1 station within 25 km)
5.94
Median
5.94
Average
5.94
Low
5.94
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +7.6
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
25
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 2026-07-21T20:43 UTC.