July
2007
Air Quality Summary
Air quality during
July
was in the "Good" category
for 28 days,
in the "Moderate" category
for 2 days, and
in the "Unhealthy for Sensitive Groups" category for 1 days.
Precipitation was .65 inches
above normal levels in the Puget
Sound region, with SeaTac airport receiving 1.44 inches
of rainfall. The airport average monthly temperature of 67.8° F
was 2.5 degrees
above normal for
July
with a maximum temperature of 98° F
on the 11th.
A minimum temperature of 54° F
occurred on the 7th, 8th, and 31st.
-
The highest PM2.5 value of
30 µg/m3 was in the
"Moderate" category (AQI of 80)
and was measured on Thursday the 5th at the South Hill site in Puyallup.
-
The highest PM10 value of
38 µg/m3 was in the
"Good" category (AQI of 35)
and was measured on Friday the 6th at the Alexander Ave site in Tacoma.
-
The highest 8-hour average for carbon monoxide was 0.8
ppm, in the "Good" category (AQI of 9),
and occurred during the morning hours of
Wednesday the 18th at the 148th Ave NE site in Bellevue.
-
Ozone 8 hour standard - The highest 8-hour average for ozone was 0.090 ppm,
in the "Unhealthy for Sensitive Groups" category (AQI of 114),
and occurred on Wednesday, July 11 at the Mud Mountain site in Enumclaw.
-
Air quality in the month of
July
exceeded our PM2.5 health goal in Snohomish County 0 times,
in King County 0 times,
in Pierce County 2 times
and in Kitsap County 0 times.
