Air Quality in Monrovia, United States

Windy
27.8°C · 26.3% humidity
27.8°
Feels 27.8°
35
Good
Air quality is satisfactory. Enjoy outdoor activities.
29 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
35 4pm
35
35
35 7pm
35
35
35 10pm
35
35
35 1am
35
35
35 4am
35
35
35 7am
35
35
35 10am
35
35
35 1pm
35
35
Station readings
50
25
25
21
CAMS model adj -19
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

Monrovia's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

26.3%
Humidity
46.5 km/h
Wind S
1009.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
35
8.51 µg/m³
PM10
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Monrovia?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.58.51 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (29 stations within 25 km)
8.51
Median
8.94
Average
0.91
Low
11.52
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +5.0

What is the 7-day forecast for Monrovia?

06-09
27.8° 13.9°
06-10
29.4° 15.5°
06-11
26.5° 15.5°
06-12
29.9° 16.2°
0.19 mm
06-13
33.1° 17.1°
06-14
28.2° 19.1°
06-15
25.6° 8.9°
Both models agree Avg diff: 3.1°C

Where are air quality stations near Monrovia?

21
united-states-of-america-san-marino-sierra-madre-boulevard
9.5 km 27.7°C 41.0% RH PM2.5: 5.0 µg/m³ PM10: 6.0 µg/m³
14
Glendora-Laurel, Los Angeles
13.7 km PM2.5: 3.4 µg/m³
52
Glendora-Laurel, Los Angeles
13.7 km PM2.5: 12.6 µg/m³
39
Glendora-Laurel, Los Angeles
13.7 km PM2.5: 9.4 µg/m³
15
Glendora-Laurel, Los Angeles
13.7 km PM2.5: 3.6 µg/m³
22
Glendora-Laurel, Los Angeles
13.7 km PM2.5: 5.3 µg/m³
2
RBAC Rose Bowl Aquatics Center
15.2 km PM2.5: 0.6 µg/m³ PM10: 0.9 µg/m³
32
Loyola Village ES (5014)
15.5 km PM2.5: 7.8 µg/m³
43
Sierra Vista ES (6767)
15.8 km PM2.5: 10.3 µg/m³
37
San Pascual ES (6493)
16.3 km PM2.5: 8.8 µg/m³

What cities are near Monrovia?

36 Duarte 34 Arcadia 35 Temple City 37 Baldwin Park 43 Azusa 39 Vincent 36 El Monte 36 Rosemead 38 West Covina 37 West Puente Valley
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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 2026-06-09T02:33 UTC.