Air Quality in Fountain Valley, United States

Windy
19.4°C · 64.7% humidity
19.4°
Feels 19.4°
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
5 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
50 3pm
51
51
18 6pm
48
48
48 9pm
48
48
35 12am
35
23
23 3am
23
23
23 6am
23
23
23 9am
23
23
23 12pm
35
23
Station readings
50
51
51
18
CAMS model adj -2
50
50
50
50
50
50
50
50
50
37
37
25
25
25
25
25
25
25
25
25
25
25
37
25
AD 728×90

PM2.5 Trend (24h)

32h · 2 stations
64.7%
Humidity
62.6 km/h
Wind SSW
1013.5 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Temperature & Precipitation

PM2.59.55 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
9.55
Median
9.77
Average
9.38
Low
10.42
High
PM2.5 µg/m³ · Model: 7.4 · Bias: -2.2
04-09
20.8° 16.9°
04-10
19.1° 15.9°
13.62 mm
04-11
18.2° 15.0°
15.12 mm
04-12
17.3° 13.6°
0.31 mm
04-13
17.4° 13.8°
0.06 mm
04-14
20.9° 15.4°
04-15
22.0° 17.9°

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T18:52 UTC.