AQSQID: 490495010

Site Name: Spanish Fork

Location: Spanish Fork (W 2050 N St), UT

Reporting: True, Located: True

Current AQI: 32.0

Spanish Fork (W 2050 N St) UT, US: 40.136398, -111.660202

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 30, 2020, 5 p.m. 3.1 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 3.1 μg/m3 (13) 32.0
 
March 30, 2020, 4 p.m. 5.2 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A N/A 3.8 μg/m3 (16) 30.0
 
March 30, 2020, 3 p.m. 6.3 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 4.1 μg/m3 (17) 25.0
 
March 30, 2020, 2 p.m. 8.9 ppb (8) 1.5 ppb (1) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) N/A N/A 4.4 μg/m3 (18) 21.0
 
March 30, 2020, 1 p.m. 21.7 ppb (20) 2.7 ppb (3) N/A 19.0 ppb (18) N/A N/A 16.0 ppb (12) N/A N/A 4.6 μg/m3 (19) 20.0
 
March 30, 2020, noon 18.7 ppb (17) 2.6 ppb (2) N/A 16.0 ppb (15) N/A N/A 18.0 ppb (14) N/A N/A 5.4 μg/m3 (23) 23.0
 
March 30, 2020, 11 a.m. 4.5 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) N/A N/A 3.1 μg/m3 (13) 24.0
 
March 30, 2020, 10 a.m. 4.9 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) N/A N/A 3.7 μg/m3 (15) 22.0
 
March 30, 2020, 9 a.m. 5.7 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) N/A N/A 3.2 μg/m3 (13) 21.0
 
March 30, 2020, 8 a.m. 6.0 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A 3.7 μg/m3 (15) 20.0
 
March 30, 2020, 7 a.m. 3.7 ppb (3) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) N/A N/A 3.4 μg/m3 (14) 27.0
 
March 30, 2020, 6 a.m. 4.7 ppb (4) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) N/A N/A 2.4 μg/m3 (10) 27.0
 
March 30, 2020, 5 a.m. 4.7 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 1.9 μg/m3 (8) 28.0
 
March 30, 2020, 4 a.m. 2.9 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 1.5 μg/m3 (6) 31.0
 
March 30, 2020, 3 a.m. 3.4 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) N/A N/A 1.7 μg/m3 (7) 32.0
 
March 30, 2020, 2 a.m. 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 1.7 μg/m3 (7) 32.0
 
March 30, 2020, 1 a.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A N/A 1.6 μg/m3 (7) 34.0
 
March 30, 2020, midnight 3.6 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) N/A N/A 1.8 μg/m3 (8) 35.0
 
March 29, 2020, 11 p.m. 2.6 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 1.7 μg/m3 (7) 35.0
 
March 29, 2020, 10 p.m. 2.9 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 1.8 μg/m3 (8) 35.0
 
March 29, 2020, 9 p.m. 3.9 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) N/A N/A 2.5 μg/m3 (10) 35.0
 
March 29, 2020, 8 p.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 2.3 μg/m3 (10) 35.0
 
March 29, 2020, 7 p.m. 1.7 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 2.4 μg/m3 (10) 35.0
 
March 29, 2020, 6 p.m. 2.0 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 2.1 μg/m3 (9) 35.0
 
March 29, 2020, 5 p.m. 2.0 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 1.7 μg/m3 (7) 35.0
 
March 29, 2020, 4 p.m. 4.5 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) N/A N/A 1.9 μg/m3 (8) 32.0
 
March 29, 2020, 3 p.m. 4.6 ppb (4) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) N/A N/A 2.1 μg/m3 (9) 31.0
 
March 29, 2020, 2 p.m. 5.0 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 2.3 μg/m3 (10) 28.0
 
March 29, 2020, 1 p.m. 3.7 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) N/A N/A 2.1 μg/m3 (9) 26.0
 
March 29, 2020, noon 4.6 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) N/A N/A 2.2 μg/m3 (9) 27.0
 
March 29, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 1.9 μg/m3 (8) 28.0
 
March 29, 2020, 10 a.m. 4.7 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 1.8 μg/m3 (8) 28.0
 
March 29, 2020, 9 a.m. 4.6 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) N/A N/A 2.0 μg/m3 (8) 27.0
 
March 29, 2020, 8 a.m. 2.2 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
March 29, 2020, 7 a.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 2.5 μg/m3 (10) 28.0
 
March 29, 2020, 6 a.m. 2.8 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 2.7 μg/m3 (11) 28.0
 
March 29, 2020, 5 a.m. 3.3 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 2.8 μg/m3 (12) 28.0
 
March 29, 2020, 4 a.m. 4.4 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 3.1 μg/m3 (13) 28.0
 
March 29, 2020, 3 a.m. 11.2 ppb (10) 1.5 ppb (1) N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) N/A N/A 4.0 μg/m3 (17) 23.0
 
March 29, 2020, 2 a.m. 4.7 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A N/A 4.1 μg/m3 (17) 30.0
 
March 29, 2020, 1 a.m. 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 3.0 μg/m3 (12) 33.0
 
March 29, 2020, midnight 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 2.9 μg/m3 (12) 36.0
 
March 28, 2020, 11 p.m. 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 2.6 μg/m3 (11) 37.0
 
March 28, 2020, 10 p.m. 1.9 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 3.4 μg/m3 (14) 37.0
 
March 28, 2020, 9 p.m. 2.0 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 3.5 μg/m3 (15) 36.0
 
March 28, 2020, 8 p.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 2.7 μg/m3 (11) 37.0
 
March 28, 2020, 7 p.m. 3.5 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A N/A 3.9 μg/m3 (16) 34.0
 
March 28, 2020, 6 p.m. 2.8 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A N/A 3.7 μg/m3 (15) 34.0
 
March 28, 2020, 5 p.m. 2.0 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 3.1 μg/m3 (13) 35.0
 
March 28, 2020, 4 p.m. 3.1 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 2.8 μg/m3 (12) 32.0
 
March 28, 2020, 3 p.m. 5.0 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 2.9 μg/m3 (12) 28.0
 
March 28, 2020, 2 p.m. 7.8 ppb (7) 1.2 ppb (1) N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 2.9 μg/m3 (12) 26.0
 
March 28, 2020, 1 p.m. 4.5 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) N/A N/A 2.3 μg/m3 (10) 27.0
 
March 28, 2020, noon 1.6 ppb (1) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) N/A N/A 2.2 μg/m3 (9) 22.0
 
March 28, 2020, 11 a.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 2.3 μg/m3 (10) 10.0
 
March 28, 2020, 10 a.m. 2.3 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 2.1 μg/m3 (9) 28.0
 
March 28, 2020, 9 a.m. 7.2 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 37.0 ppb (28) N/A N/A 6.6 μg/m3 (28) 28.0
 
March 28, 2020, 8 a.m. 2.8 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 3.1 μg/m3 (13) 32.0
 
March 28, 2020, 7 a.m. 2.1 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 1.9 μg/m3 (8) 33.0
 
March 28, 2020, 6 a.m. 2.7 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 2.2 μg/m3 (9) 32.0
 
March 28, 2020, 5 a.m. 10.8 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) N/A N/A 4.1 μg/m3 (17) 22.0
 
March 28, 2020, 4 a.m. 11.5 ppb (11) 0.5 ppb (0) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) N/A N/A 4.7 μg/m3 (20) 21.0
 
March 28, 2020, 3 a.m. 9.4 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 33.0 ppb (25) N/A N/A 3.3 μg/m3 (14) 25.0
 
March 28, 2020, 2 a.m. 4.5 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) N/A N/A 3.1 μg/m3 (13) 31.0
 
March 28, 2020, 1 a.m. 4.3 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (33) N/A N/A 3.0 μg/m3 (12) 33.0
 
March 28, 2020, midnight 2.5 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
March 27, 2020, 11 p.m. 2.6 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 1.8 μg/m3 (8) 35.0
 
March 27, 2020, 10 p.m. 3.1 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 1.8 μg/m3 (8) 35.0
 
March 27, 2020, 9 p.m. 2.6 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A N/A 1.8 μg/m3 (8) 34.0
 
March 27, 2020, 8 p.m. 2.5 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 1.8 μg/m3 (8) 35.0
 
March 27, 2020, 7 p.m. 5.1 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) N/A N/A 2.2 μg/m3 (9) 34.0
 
March 27, 2020, 6 p.m. 9.0 ppb (8) 3.3 ppb (3) N/A 6.0 ppb (6) N/A N/A 41.0 ppb (32) N/A N/A 2.9 μg/m3 (12) 32.0
 
March 27, 2020, 5 p.m. 7.4 ppb (7) 2.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) N/A N/A 3.0 μg/m3 (12) 30.0
 
March 27, 2020, 4 p.m. 12.4 ppb (11) 5.1 ppb (5) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 4.3 μg/m3 (18) 25.0
 
March 27, 2020, 3 p.m. 21.4 ppb (20) 8.8 ppb (8) N/A 13.0 ppb (12) N/A N/A 26.0 ppb (20) N/A N/A 7.4 μg/m3 (31) 31.0
 
March 27, 2020, 2 p.m. 34.1 ppb (32) 12.9 ppb (12) N/A 21.0 ppb (19) N/A N/A 14.0 ppb (11) N/A N/A 14.4 μg/m3 (55) 55.0
 
March 27, 2020, 1 p.m. 37.4 ppb (35) 8.9 ppb (8) N/A 29.0 ppb (27) N/A N/A 8.0 ppb (6) N/A N/A 6.7 μg/m3 (28) 35.0
 
March 27, 2020, noon 21.8 ppb (20) 3.2 ppb (3) N/A 19.0 ppb (18) N/A N/A 17.0 ppb (13) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 27, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 4.3 μg/m3 (18) 18.0
 
March 27, 2020, 10 a.m. 10.3 ppb (10) 0.7 ppb (1) N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) N/A N/A 5.9 μg/m3 (25) 25.0
 
March 27, 2020, 9 a.m. 13.1 ppb (12) 0.6 ppb (1) N/A 13.0 ppb (12) N/A N/A 26.0 ppb (20) N/A N/A 5.7 μg/m3 (24) 24.0
 
March 27, 2020, 8 a.m. 17.5 ppb (16) 0.7 ppb (1) N/A 17.0 ppb (16) N/A N/A 21.0 ppb (16) N/A N/A 5.7 μg/m3 (24) 24.0
 
March 27, 2020, 7 a.m. 11.0 ppb (10) 0.6 ppb (1) N/A 11.0 ppb (10) N/A N/A 28.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
March 27, 2020, 6 a.m. 14.2 ppb (13) 0.6 ppb (1) N/A 14.0 ppb (13) N/A N/A 24.0 ppb (18) N/A N/A 4.1 μg/m3 (17) 18.0
 
March 27, 2020, 5 a.m. 18.5 ppb (17) 0.7 ppb (1) N/A 18.0 ppb (17) N/A N/A 23.0 ppb (18) N/A N/A 4.2 μg/m3 (18) 18.0
 
March 27, 2020, 4 a.m. 16.7 ppb (15) 1.0 ppb (1) N/A 16.0 ppb (15) N/A N/A 23.0 ppb (18) N/A N/A 3.8 μg/m3 (16) 18.0
 
March 27, 2020, 3 a.m. 13.2 ppb (12) 0.3 ppb (0) N/A 13.0 ppb (12) N/A N/A 22.0 ppb (17) N/A N/A 3.6 μg/m3 (15) 17.0
 
March 27, 2020, 2 a.m. 10.1 ppb (9) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A 33.0 ppb (25) N/A N/A 3.6 μg/m3 (15) 25.0
 
March 27, 2020, 1 a.m. 6.5 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) N/A N/A 3.4 μg/m3 (14) 31.0
 
March 27, 2020, midnight 6.5 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 43.0 ppb (33) N/A N/A 3.3 μg/m3 (14) 33.0
 
March 26, 2020, 11 p.m. 4.4 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (36) N/A N/A 3.0 μg/m3 (12) 36.0
 
March 26, 2020, 10 p.m. 2.2 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
March 26, 2020, 9 p.m. 3.1 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 54.0 ppb (42) N/A N/A 3.4 μg/m3 (14) 42.0
 
March 26, 2020, 8 p.m. 2.7 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) N/A N/A 3.1 μg/m3 (13) 41.0
 
March 26, 2020, 7 p.m. 3.4 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) N/A N/A 2.5 μg/m3 (10) 39.0
 
March 26, 2020, 6 p.m. 3.7 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) N/A N/A 2.2 μg/m3 (9) 39.0
 
March 26, 2020, 5 p.m. 6.7 ppb (6) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 45.0 ppb (35) N/A N/A 2.4 μg/m3 (10) 35.0
 
March 26, 2020, 4 p.m. 8.9 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 39.0 ppb (30) N/A N/A 2.7 μg/m3 (11) 30.0
 
March 26, 2020, 3 p.m. 6.6 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 41.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
March 26, 2020, 2 p.m. 5.6 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) N/A N/A 2.0 μg/m3 (8) 31.0
 
March 26, 2020, 1 p.m. 4.1 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) N/A N/A 1.4 μg/m3 (6) 32.0
 
March 26, 2020, noon 2.8 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
March 26, 2020, 11 a.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 0.7 μg/m3 (3) 32.0
 
March 26, 2020, 10 a.m. 3.4 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) N/A N/A 0.9 μg/m3 (4) 32.0
 
March 26, 2020, 9 a.m. 2.9 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) N/A N/A 1.8 μg/m3 (8) 32.0
 
March 26, 2020, 8 a.m. 2.9 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 2.1 μg/m3 (9) 32.0
 
March 26, 2020, 7 a.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 1.3 μg/m3 (5) 32.0
 
March 26, 2020, 6 a.m. 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 1.3 μg/m3 (5) 32.0
 
March 26, 2020, 5 a.m. 2.5 ppb (2) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A N/A 1.4 μg/m3 (6) 33.0
 
March 26, 2020, 4 a.m. 2.7 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A N/A 1.4 μg/m3 (6) 34.0
 
March 26, 2020, 3 a.m. 3.5 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A N/A 2.2 μg/m3 (9) 34.0
 
March 26, 2020, 2 a.m. 4.1 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) N/A N/A 2.9 μg/m3 (12) 35.0
 
March 26, 2020, 1 a.m. 6.0 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (34) N/A N/A 4.7 μg/m3 (20) 34.0
 
March 26, 2020, midnight 6.2 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 46.0 ppb (35) N/A N/A 6.8 μg/m3 (28) 35.0
 
March 25, 2020, 11 p.m. 4.2 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) N/A N/A 6.8 μg/m3 (28) 38.0
 
March 25, 2020, 10 p.m. 7.1 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 47.0 ppb (36) N/A N/A 9.7 μg/m3 (40) 40.0
 
March 25, 2020, 9 p.m. 8.3 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (34) N/A N/A 8.9 μg/m3 (37) 37.0
 
March 25, 2020, 8 p.m. 5.3 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (36) N/A N/A 5.4 μg/m3 (23) 36.0
 
March 25, 2020, 7 p.m. 5.7 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
March 25, 2020, 6 p.m. 5.6 ppb (5) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (34) N/A N/A 2.9 μg/m3 (12) 34.0
 
March 25, 2020, 5 p.m. 11.1 ppb (10) 2.5 ppb (2) N/A 9.0 ppb (8) N/A N/A 40.0 ppb (31) N/A N/A 3.3 μg/m3 (14) 31.0
 
March 25, 2020, 4 p.m. 21.9 ppb (20) 5.3 ppb (5) N/A 17.0 ppb (16) N/A N/A 28.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
March 25, 2020, 3 p.m. 15.1 ppb (14) 1.6 ppb (1) N/A 14.0 ppb (13) N/A N/A 30.0 ppb (23) N/A N/A 3.6 μg/m3 (15) 23.0
 
March 25, 2020, 2 p.m. 21.8 ppb (20) 1.9 ppb (2) N/A 20.0 ppb (19) N/A N/A 25.0 ppb (19) N/A N/A 6.3 μg/m3 (26) 26.0
 
March 25, 2020, 1 p.m. 10.9 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 36.0 ppb (28) N/A N/A 3.2 μg/m3 (13) 28.0
 
March 25, 2020, noon 2.2 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 1.4 μg/m3 (6) 35.0
 
March 25, 2020, 11 a.m. 1.8 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 0.4 μg/m3 (2) 35.0
 
March 25, 2020, 10 a.m. 2.1 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 0.8 μg/m3 (3) 32.0
 
March 25, 2020, 9 a.m. 1.6 ppb (1) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 1.4 μg/m3 (6) 35.0
 
March 25, 2020, 8 a.m. 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) N/A N/A 1.2 μg/m3 (5) 35.0
 
March 25, 2020, 7 a.m. 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 1.0 μg/m3 (4) 36.0
 
March 25, 2020, 6 a.m. 1.6 ppb (1) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 1.1 μg/m3 (5) 37.0
 
March 25, 2020, 5 a.m. 1.5 ppb (1) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A 1.4 μg/m3 (6) 37.0
 
March 25, 2020, 4 a.m. 1.6 ppb (1) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 1.6 μg/m3 (7) 36.0
 
March 25, 2020, 3 a.m. 2.3 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
March 25, 2020, 2 a.m. 3.7 ppb (3) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (33) N/A N/A 2.2 μg/m3 (9) 33.0
 
March 25, 2020, 1 a.m. 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) N/A N/A 1.9 μg/m3 (8) 35.0
 
March 25, 2020, midnight 2.3 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 1.9 μg/m3 (8) 36.0
 
March 24, 2020, 11 p.m. 1.9 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 3.4 μg/m3 (14) 38.0
 
March 24, 2020, 10 p.m. 2.2 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 2.4 μg/m3 (10) 38.0
 
March 24, 2020, 9 p.m. 2.3 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 1.1 μg/m3 (5) 36.0
 
March 24, 2020, 8 p.m. 2.0 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 0.6 μg/m3 (2) 36.0
 
March 24, 2020, 7 p.m. 2.8 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 0.8 μg/m3 (3) 36.0
 
March 24, 2020, 6 p.m. 4.7 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A N/A 1.0 μg/m3 (4) 33.0
 
March 24, 2020, 5 p.m. 6.7 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (32) N/A N/A 1.8 μg/m3 (8) 32.0
 
March 24, 2020, 4 p.m. 10.8 ppb (10) 3.5 ppb (3) N/A 7.0 ppb (6) N/A N/A 37.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
March 24, 2020, 3 p.m. 13.8 ppb (13) 3.2 ppb (3) N/A 11.0 ppb (10) N/A N/A 30.0 ppb (23) N/A N/A 1.7 μg/m3 (7) 23.0
 
March 24, 2020, 2 p.m. 11.2 ppb (10) 2.1 ppb (2) N/A 9.0 ppb (8) N/A N/A 31.0 ppb (24) N/A N/A 1.1 μg/m3 (5) 24.0
 
March 24, 2020, 1 p.m. 13.2 ppb (12) 1.1 ppb (1) N/A 12.0 ppb (11) N/A N/A 25.0 ppb (19) N/A N/A 1.5 μg/m3 (6) 19.0
 
March 24, 2020, noon 11.0 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 31.0 ppb (24) N/A N/A 1.9 μg/m3 (8) 24.0
 
March 24, 2020, 11 a.m. 17.8 ppb (16) 2.2 ppb (2) N/A 16.0 ppb (15) N/A N/A 24.0 ppb (18) N/A N/A 2.1 μg/m3 (9) 18.0
 
March 24, 2020, 10 a.m. 7.5 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
March 24, 2020, 9 a.m. 8.0 ppb (7) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 36.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
March 24, 2020, 8 a.m. 3.9 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) N/A N/A 0.6 μg/m3 (2) 30.0
 
March 24, 2020, 7 a.m. 1.8 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 0.6 μg/m3 (2) 32.0
 
March 24, 2020, 6 a.m. 3.0 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A 1.0 μg/m3 (4) 30.0
 
March 24, 2020, 5 a.m. 3.0 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A 1.2 μg/m3 (5) 30.0
 
March 24, 2020, 4 a.m. 2.8 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
March 24, 2020, 3 a.m. 2.4 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (31) N/A N/A 0.9 μg/m3 (4) 31.0
 
March 24, 2020, 2 a.m. 4.0 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) N/A N/A 0.8 μg/m3 (3) 32.0
 
March 24, 2020, 1 a.m. 2.0 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A N/A 0.9 μg/m3 (4) 34.0
 
March 24, 2020, midnight 2.3 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 1.0 μg/m3 (4) 36.0
 
March 23, 2020, 11 p.m. 4.2 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) N/A N/A 1.6 μg/m3 (7) 36.0
 
March 23, 2020, 10 p.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A 1.7 μg/m3 (7) 36.0
 
March 23, 2020, 9 p.m. 3.1 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 1.7 μg/m3 (7) 35.0
 
March 23, 2020, 8 p.m. 3.7 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) N/A N/A 2.1 μg/m3 (9) 35.0
 
March 23, 2020, 7 p.m. 3.3 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) N/A N/A 2.4 μg/m3 (10) 36.0
 
March 23, 2020, 6 p.m. 2.5 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.6 μg/m3 (7) 7.0