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
AD 728×90

Air Quality Index Trend

48h · 2 stn

Placentia'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▲
25
5.94 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Placentia?

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations
PM2.55.94 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX29.9
Extreme
AD 300×250
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
12.8 km PM2.5: 2.7 µg/m³
11
Villa Intermediate
14.5 km PM2.5: 2.7 µg/m³
20
Kennedy Elementary
15.6 km PM2.5: 4.8 µg/m³
25
Century High School
15.9 km PM2.5: 5.9 µg/m³
8
Monroe Elementary
17.6 km PM2.5: 2.0 µg/m³

What cities are near Placentia?

25 Fullerton 25 Yorba Linda 25 Brea 25 Anaheim 37 La Habra 38 Buena Park 38 Rowland Heights 25 Garden Grove 34 Stanton 25 North Tustin
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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.