Air Quality in St. Johns, United States

Drizzle
22.6°C · 93.3% humidity
22.6°
Feels 22.6°
21
Good
Air quality is satisfactory. Enjoy outdoor activities.
6 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
27 9pm
27
27
21 12am
23
24
25 3am
25
26
26 6am
46
47
20 9am
20
18
20 12pm
20
20
20 3pm
27
27
27 6pm
27
27
Station readings 30h ago
AQI 20
PM2.5 4.9 µg/m³ · 30h ago
AD 728×90

Air Quality Index Trend

48h · 6 stn

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

93.3%
Humidity
23.6 km/h
Wind W
1011.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
21
5.14 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for St. Johns?

Temperature & Precipitation

PM2.5 Trend

48h · 6 stations
PM2.55.14 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (6 stations within 25 km)
5.14
Median
5.27
Average
3.1
Low
7.2
High
PM2.5 µg/m³ · Model: 7.1 · Bias: +2.0

What is the 7-day forecast for St. Johns?

06-09
31.5° 22.6°
3.13 mm
06-10
37.9° 23.3°
0.06 mm
06-11
27.3° 23.1°
8.94 mm
06-12
32.4° 23.9°
06-13
35.3° 23.8°
0.69 mm
06-14
36.4° 22.4°
0.56 mm
06-15
37.3° 21.8°
5.5 mm
Both models agree Avg diff: 2.4°C

Where are air quality stations near St. Johns?

11
Mandarin Rd Site, Duval, Florida, USA
10.3 km PM2.5: 2.6 µg/m³
112
Mandarin Rd Site, Duval, Florida, USA
10.3 km PM2.5: 40.0 µg/m³
61
Pepsi Place (PP-PPL), Duval, Florida, USA
20.9 km PM2.5: 16.9 µg/m³
30
Mayo Clinic, Duval, Florida, USA
21.8 km PM2.5: 7.2 µg/m³
34
Mayo Clinic, Duval, Florida, USA
21.8 km PM2.5: 8.2 µg/m³

What cities are near St. Johns?

21 Fruit Cove 20 Fleming Island 26 Palm Valley 19 Lakeside 28 Ponte Vedra Beach 27 Jacksonville Beach 18 Oakleaf Plantation 16 Jacksonville 31 Palm Coast 34 St. Marys
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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 2026-06-09T04:59 UTC.